diff --git a/.eslintrc.base.js b/.eslintrc.base.js
index 9684533..9eb958b 100644
--- a/.eslintrc.base.js
+++ b/.eslintrc.base.js
@@ -38,6 +38,7 @@ module.exports = (projectRoot, extraRules = {}) => ({
     "typescript-enum",
     "typescript-sort-keys",
     "unused-imports",
+    "no-only-tests",
   ],
   settings: {
     react: {
@@ -109,6 +110,10 @@ module.exports = (projectRoot, extraRules = {}) => ({
     "@typescript-eslint/no-useless-constructor": ["error"],
     "@typescript-eslint/prefer-optional-chain": ["error"],
     "@typescript-eslint/consistent-type-imports": ["error"],
+    "@typescript-eslint/require-array-sort-compare": [
+      "error",
+      { ignoreStringArrays: true },
+    ],
     eqeqeq: ["error"],
     "object-shorthand": ["error", "always"],
     "@typescript-eslint/unbound-method": ["error"],
@@ -430,6 +435,9 @@ module.exports = (projectRoot, extraRules = {}) => ({
     ],
 
     quotes: ["error", "double", { avoidEscape: true }],
+
+    "no-only-tests/no-only-tests": "error",
+
     ...extraRules,
   },
 });
diff --git a/.npmrc b/.npmrc
deleted file mode 100644
index c52ad5f..0000000
--- a/.npmrc
+++ /dev/null
@@ -1 +0,0 @@
-# Published to https://www.npmjs.com
diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..f5688b5
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,8 @@
+{
+  "overrides": [
+    {
+      "files": ["*.ts", "*.tsx"],
+      "options": { "parser": "typescript" }
+    }
+  ]
+}
diff --git a/docs/classes/PacerComposite.md b/docs/classes/PacerComposite.md
deleted file mode 100644
index 4cd23e0..0000000
--- a/docs/classes/PacerComposite.md
+++ /dev/null
@@ -1,66 +0,0 @@
-[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerComposite
-
-# Class: PacerComposite
-
-A Pacer which runs all sub-pacers and chooses the largest delay.
-
-## Implements
-
-- [`Pacer`](../interfaces/Pacer.md)
-
-## Constructors
-
-### constructor
-
-• **new PacerComposite**(`_pacers`): [`PacerComposite`](PacerComposite.md)
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `_pacers` | [`Pacer`](../interfaces/Pacer.md)[] |
-
-#### Returns
-
-[`PacerComposite`](PacerComposite.md)
-
-#### Defined in
-
-[src/pacers/PacerComposite.ts:10](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerComposite.ts#L10)
-
-## Properties
-
-### name
-
-• `Readonly` **name**: ``""``
-
-Human readable name of the pacer, used when composing multiple pacers.
-
-#### Implementation of
-
-[Pacer](../interfaces/Pacer.md).[name](../interfaces/Pacer.md#name)
-
-#### Defined in
-
-[src/pacers/PacerComposite.ts:8](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerComposite.ts#L8)
-
-## Methods
-
-### touch
-
-▸ **touch**(): `Promise`\<\{ `delayMs`: `number` ; `reason`: `string`  }\>
-
-Signals that we're about to send a request. Returns the delay we need to
-wait for before actually sending.
-
-#### Returns
-
-`Promise`\<\{ `delayMs`: `number` ; `reason`: `string`  }\>
-
-#### Implementation of
-
-[Pacer](../interfaces/Pacer.md).[touch](../interfaces/Pacer.md#touch)
-
-#### Defined in
-
-[src/pacers/PacerComposite.ts:12](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerComposite.ts#L12)
diff --git a/docs/classes/PacerQPS.md b/docs/classes/PacerQPS.md
deleted file mode 100644
index 0436f3f..0000000
--- a/docs/classes/PacerQPS.md
+++ /dev/null
@@ -1,79 +0,0 @@
-[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerQPS
-
-# Class: PacerQPS
-
-Implements a very simple heuristic:
-- increase the delay if we're above the QPS within the rolling window;
-- decrease the delay if we're below the desired QPS.
-
-Each worker keeps (and grows/shrinks) its delay individually; this way, we
-don't need to elect, who's the "source of truth" for the delay.
-
-Backend is a concrete (and minimal) implementation of the storage logic for
-the pacing algorithm.
-
-## Implements
-
-- [`Pacer`](../interfaces/Pacer.md)
-
-## Constructors
-
-### constructor
-
-• **new PacerQPS**(`_options`, `_backend`): [`PacerQPS`](PacerQPS.md)
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `_options` | [`PacerQPSOptions`](../interfaces/PacerQPSOptions.md) |
-| `_backend` | [`PacerQPSBackend`](../interfaces/PacerQPSBackend.md) |
-
-#### Returns
-
-[`PacerQPS`](PacerQPS.md)
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:74](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L74)
-
-## Accessors
-
-### name
-
-• `get` **name**(): `string`
-
-Human readable name of the pacer, used when composing multiple pacers.
-
-#### Returns
-
-`string`
-
-#### Implementation of
-
-[Pacer](../interfaces/Pacer.md).[name](../interfaces/Pacer.md#name)
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:79](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L79)
-
-## Methods
-
-### touch
-
-▸ **touch**(): `Promise`\<[`PacerDelay`](../interfaces/PacerDelay.md)\>
-
-Signals that we're about to send a request. Returns the delay we need to
-wait for before actually sending.
-
-#### Returns
-
-`Promise`\<[`PacerDelay`](../interfaces/PacerDelay.md)\>
-
-#### Implementation of
-
-[Pacer](../interfaces/Pacer.md).[touch](../interfaces/Pacer.md#touch)
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:83](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L83)
diff --git a/docs/interfaces/Pacer.md b/docs/interfaces/Pacer.md
index 3948803..a8d83f2 100644
--- a/docs/interfaces/Pacer.md
+++ b/docs/interfaces/Pacer.md
@@ -5,36 +5,31 @@
 Pacer is a class which allows to pace requests on some resource identified by
 the instance of this class.
 
-## Implemented by
-
-- [`PacerComposite`](../classes/PacerComposite.md)
-- [`PacerQPS`](../classes/PacerQPS.md)
-
 ## Properties
 
-### name
+### key
 
-• `Readonly` **name**: `string`
+• `Readonly` **key**: `string`
 
 Human readable name of the pacer, used when composing multiple pacers.
 
 #### Defined in
 
-[src/pacers/Pacer.ts:15](https://github.com/clickup/rest-client/blob/master/src/pacers/Pacer.ts#L15)
+[src/middlewares/paceRequests.ts:12](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L12)
 
 ## Methods
 
-### touch
+### pace
 
-▸ **touch**(): `Promise`\<[`PacerDelay`](PacerDelay.md)\>
+▸ **pace**(): `Promise`\<[`PacerOutcome`](PacerOutcome.md)\>
 
 Signals that we're about to send a request. Returns the delay we need to
 wait for before actually sending.
 
 #### Returns
 
-`Promise`\<[`PacerDelay`](PacerDelay.md)\>
+`Promise`\<[`PacerOutcome`](PacerOutcome.md)\>
 
 #### Defined in
 
-[src/pacers/Pacer.ts:21](https://github.com/clickup/rest-client/blob/master/src/pacers/Pacer.ts#L21)
+[src/middlewares/paceRequests.ts:18](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L18)
diff --git a/docs/interfaces/PacerDelay.md b/docs/interfaces/PacerDelay.md
deleted file mode 100644
index 7d3d388..0000000
--- a/docs/interfaces/PacerDelay.md
+++ /dev/null
@@ -1,25 +0,0 @@
-[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerDelay
-
-# Interface: PacerDelay
-
-A result of some Pacer work.
-
-## Properties
-
-### delayMs
-
-• **delayMs**: `number`
-
-#### Defined in
-
-[src/pacers/Pacer.ts:5](https://github.com/clickup/rest-client/blob/master/src/pacers/Pacer.ts#L5)
-
-___
-
-### reason
-
-• **reason**: `string`
-
-#### Defined in
-
-[src/pacers/Pacer.ts:6](https://github.com/clickup/rest-client/blob/master/src/pacers/Pacer.ts#L6)
diff --git a/docs/interfaces/PacerOutcome.md b/docs/interfaces/PacerOutcome.md
new file mode 100644
index 0000000..76f0b96
--- /dev/null
+++ b/docs/interfaces/PacerOutcome.md
@@ -0,0 +1,25 @@
+[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerOutcome
+
+# Interface: PacerOutcome
+
+A result of some Pacer work.
+
+## Properties
+
+### delayMs
+
+• **delayMs**: `number`
+
+#### Defined in
+
+[src/middlewares/paceRequests.ts:25](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L25)
+
+___
+
+### reason
+
+• **reason**: `string`
+
+#### Defined in
+
+[src/middlewares/paceRequests.ts:26](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L26)
diff --git a/docs/interfaces/PacerQPSBackend.md b/docs/interfaces/PacerQPSBackend.md
deleted file mode 100644
index 868ec46..0000000
--- a/docs/interfaces/PacerQPSBackend.md
+++ /dev/null
@@ -1,44 +0,0 @@
-[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerQPSBackend
-
-# Interface: PacerQPSBackend
-
-## Properties
-
-### key
-
-• `Readonly` **key**: `string`
-
-Resource key which this backend is operating on.
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:33](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L33)
-
-## Methods
-
-### push
-
-▸ **push**(`props`): `Promise`\<\{ `count`: `number` ; `sum`: `number` ; `avg`: `number` ; `median`: `number`  }\>
-
-Maintains the array of numbers somewhere in memory (time-value pairs),
-inserts a new time-value pair to the end of this list, and removes all the
-entries which are earlier than `minTime`. Returns the size of the resulting
-array and some central tendency statistics about its values.
-
-#### Parameters
-
-| Name | Type |
-| :------ | :------ |
-| `props` | `Object` |
-| `props.time` | `number` |
-| `props.minTime` | `number` |
-| `props.value` | `number` |
-| `props.minCountForCentralTendency` | `number` |
-
-#### Returns
-
-`Promise`\<\{ `count`: `number` ; `sum`: `number` ; `avg`: `number` ; `median`: `number`  }\>
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:41](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L41)
diff --git a/docs/interfaces/PacerQPSOptions.md b/docs/interfaces/PacerQPSOptions.md
deleted file mode 100644
index fff1e01..0000000
--- a/docs/interfaces/PacerQPSOptions.md
+++ /dev/null
@@ -1,40 +0,0 @@
-[@clickup/rest-client](../README.md) / [Exports](../modules.md) / PacerQPSOptions
-
-# Interface: PacerQPSOptions
-
-## Properties
-
-### qps
-
-• **qps**: `number`
-
-The maximum QPS allowed within the rolling window.
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:51](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L51)
-
-___
-
-### windowSec
-
-• `Optional` **windowSec**: `number`
-
-The length of the rolling windows in milliseconds.
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:53](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L53)
-
-___
-
-### decreaseThreshold
-
-• `Optional` **decreaseThreshold**: `number`
-
-Decrease the delay if the number of requests in the window has dropped
-below `decreaseThreshold` portion of the limit.
-
-#### Defined in
-
-[src/pacers/PacerQPS.ts:56](https://github.com/clickup/rest-client/blob/master/src/pacers/PacerQPS.ts#L56)
diff --git a/docs/interfaces/RestOptions.md b/docs/interfaces/RestOptions.md
index 04b2ace..1b8e507 100644
--- a/docs/interfaces/RestOptions.md
+++ b/docs/interfaces/RestOptions.md
@@ -126,6 +126,18 @@ addresses are allowed.
 
 ___
 
+### responseEncoding
+
+• **responseEncoding**: `undefined` \| `BufferEncoding`
+
+Overrides the default encoding heuristics for responses.
+
+#### Defined in
+
+[src/RestOptions.ts:100](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L100)
+
+___
+
 ### isDebug
 
 • **isDebug**: `boolean`
@@ -134,7 +146,7 @@ If true, logs request-response pairs to console.
 
 #### Defined in
 
-[src/RestOptions.ts:100](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L100)
+[src/RestOptions.ts:102](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L102)
 
 ___
 
@@ -153,7 +165,7 @@ Sets Keep-Alive parameters (persistent connections).
 
 #### Defined in
 
-[src/RestOptions.ts:104](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L104)
+[src/RestOptions.ts:106](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L106)
 
 ___
 
@@ -165,7 +177,7 @@ When resolving DNS, use IPv4, IPv6 or both (see dns.lookup() docs).
 
 #### Defined in
 
-[src/RestOptions.ts:112](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L112)
+[src/RestOptions.ts:114](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L114)
 
 ___
 
@@ -177,7 +189,7 @@ Max timeout to wait for a response.
 
 #### Defined in
 
-[src/RestOptions.ts:114](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L114)
+[src/RestOptions.ts:116](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L116)
 
 ___
 
@@ -204,7 +216,7 @@ delay events logging.
 
 #### Defined in
 
-[src/RestOptions.ts:117](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L117)
+[src/RestOptions.ts:119](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L119)
 
 ___
 
@@ -216,7 +228,7 @@ Middlewares to wrap requests. May alter both request and response.
 
 #### Defined in
 
-[src/RestOptions.ts:119](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L119)
+[src/RestOptions.ts:121](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L121)
 
 ___
 
@@ -253,7 +265,7 @@ remote API is that weird. Return values:
 
 #### Defined in
 
-[src/RestOptions.ts:132](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L132)
+[src/RestOptions.ts:134](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L134)
 
 ___
 
@@ -287,7 +299,7 @@ contradictory information; then isRateLimitError wins.
 
 #### Defined in
 
-[src/RestOptions.ts:142](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L142)
+[src/RestOptions.ts:144](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L144)
 
 ___
 
@@ -314,7 +326,7 @@ not, the response ought to be either success or some other error.
 
 #### Defined in
 
-[src/RestOptions.ts:147](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L147)
+[src/RestOptions.ts:149](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L149)
 
 ___
 
@@ -347,4 +359,4 @@ retry will happen in not less than this number of milliseconds.
 
 #### Defined in
 
-[src/RestOptions.ts:155](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L155)
+[src/RestOptions.ts:157](https://github.com/clickup/rest-client/blob/master/src/RestOptions.ts#L157)
diff --git a/docs/modules.md b/docs/modules.md
index 1a68df0..d03d3c4 100644
--- a/docs/modules.md
+++ b/docs/modules.md
@@ -15,8 +15,6 @@
 - [RestRetriableError](classes/RestRetriableError.md)
 - [RestTimeoutError](classes/RestTimeoutError.md)
 - [RestTokenInvalidError](classes/RestTokenInvalidError.md)
-- [PacerComposite](classes/PacerComposite.md)
-- [PacerQPS](classes/PacerQPS.md)
 
 ## Interfaces
 
@@ -24,10 +22,8 @@
 - [RestLogEvent](interfaces/RestLogEvent.md)
 - [Middleware](interfaces/Middleware.md)
 - [RestOptions](interfaces/RestOptions.md)
-- [PacerDelay](interfaces/PacerDelay.md)
 - [Pacer](interfaces/Pacer.md)
-- [PacerQPSBackend](interfaces/PacerQPSBackend.md)
-- [PacerQPSOptions](interfaces/PacerQPSOptions.md)
+- [PacerOutcome](interfaces/PacerOutcome.md)
 
 ## Functions
 
@@ -77,7 +73,7 @@ Pacer implementations.
 | Name | Type |
 | :------ | :------ |
 | `pacer` | ``null`` \| [`Pacer`](interfaces/Pacer.md) \| (`req`: [`RestRequest`](classes/RestRequest.md)\<`any`\>) => `Promise`\<``null`` \| [`Pacer`](interfaces/Pacer.md)\> |
-| `delayMetric?` | (`delay`: `number`) => `void` |
+| `delayMetric?` | (`delay`: `number`, `reason`: `string`) => `void` |
 
 #### Returns
 
@@ -85,4 +81,4 @@ Pacer implementations.
 
 #### Defined in
 
-[src/middlewares/paceRequests.ts:11](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L11)
+[src/middlewares/paceRequests.ts:33](https://github.com/clickup/rest-client/blob/master/src/middlewares/paceRequests.ts#L33)
diff --git a/jest.config.base.js b/jest.config.base.js
index c0ea465..cee966c 100644
--- a/jest.config.base.js
+++ b/jest.config.base.js
@@ -6,7 +6,7 @@ module.exports = {
   restoreMocks: true,
   ...(process.env.IN_JEST_PROJECT
     ? {}
-    : { forceExit: true, testTimeout: 30000, forceExit: true }),
+    : { forceExit: true, testTimeout: 30000 }),
   transform: {
     "\\.ts$": "ts-jest",
   },
diff --git a/package.json b/package.json
index 19494b7..d830041 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@clickup/rest-client",
   "description": "A syntax sugar tool around Node fetch() API, tailored to work with TypeScript and response validators",
-  "version": "2.10.296",
+  "version": "2.11.0",
   "license": "MIT",
   "keywords": [
     "rest-client",
@@ -51,6 +51,7 @@
     "eslint-import-resolver-typescript": "^3.5.5",
     "eslint-plugin-import": "^2.27.5",
     "eslint-plugin-lodash": "^7.4.0",
+    "eslint-plugin-no-only-tests": "^3.1.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react": "^7.32.2",
diff --git a/src/RestClient.ts b/src/RestClient.ts
index 951113d..87ce577 100644
--- a/src/RestClient.ts
+++ b/src/RestClient.ts
@@ -480,8 +480,8 @@ function simpleShape(path: string, args?: any) {
     args && typeof args === "object"
       ? Object.keys(args)
           // Filter out args that are already mentioned in the path, e.g.
-          // /pages/:pageID/blocks.
-          .filter((arg) => !argsInPath.includes(arg))
+          // /pages/:pageID/blocks. Also filter out undefined args.
+          .filter((arg) => !argsInPath.includes(arg) && args[arg] !== undefined)
           .sort()
           .join(",")
       : "";
diff --git a/src/RestOptions.ts b/src/RestOptions.ts
index 727b172..45cb470 100644
--- a/src/RestOptions.ts
+++ b/src/RestOptions.ts
@@ -96,6 +96,8 @@ export default interface RestOptions {
   /** If true, non-public IP addresses are allowed too; otherwise, only unicast
    * addresses are allowed. */
   allowInternalIPs: boolean;
+  /** Overrides the default encoding heuristics for responses. */
+  responseEncoding: NodeJS.BufferEncoding | undefined;
   /** If true, logs request-response pairs to console. */
   isDebug: boolean;
   /** @ignore Holds HttpsAgent/HttpAgent instances; used internally only. */
@@ -172,6 +174,7 @@ export const DEFAULT_OPTIONS: RestOptions = {
   throwIfResIsBigger: undefined,
   privateDataInResponse: false,
   allowInternalIPs: false,
+  responseEncoding: undefined,
   isDebug: false,
   agents: new Agents(),
   keepAlive: { timeoutMs: 10000 },
diff --git a/src/RestRequest.ts b/src/RestRequest.ts
index 98c9b1b..f8ef6aa 100644
--- a/src/RestRequest.ts
+++ b/src/RestRequest.ts
@@ -347,6 +347,7 @@ export default class RestRequest<TAssertShape = any> {
           );
         }
       },
+      responseEncoding: this.options.responseEncoding,
     });
   }
 
diff --git a/src/index.ts b/src/index.ts
index bc3c6c3..9f4f74c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -7,10 +7,7 @@ import RestRetriableError from "./errors/RestRetriableError";
 import RestTimeoutError from "./errors/RestTimeoutError";
 import RestTokenInvalidError from "./errors/RestTokenInvalidError";
 import depaginate from "./helpers/depaginate";
-import paceRequests from "./middlewares/paceRequests";
-import Pacer from "./pacers/Pacer";
-import PacerComposite from "./pacers/PacerComposite";
-import PacerQPS, { PacerQPSBackend } from "./pacers/PacerQPS";
+import paceRequests, { Pacer, PacerOutcome } from "./middlewares/paceRequests";
 import RestClient, { TokenGetter } from "./RestClient";
 import RestOptions, {
   RestLogEvent,
@@ -29,10 +26,8 @@ export {
   Headers,
   Middleware,
   Pacer,
-  PacerComposite,
   paceRequests,
-  PacerQPS,
-  PacerQPSBackend,
+  PacerOutcome,
   RestClient,
   RestContentSizeOverLimitError,
   RestError,
diff --git a/src/internal/RestFetchReader.ts b/src/internal/RestFetchReader.ts
index beb3bfe..c2a8055 100644
--- a/src/internal/RestFetchReader.ts
+++ b/src/internal/RestFetchReader.ts
@@ -10,6 +10,7 @@ export interface RestFetchReaderOptions {
   heartbeat?: () => Promise<void>;
   onTimeout?: (reader: RestFetchReader, e: any) => void;
   onAfterRead?: (reader: RestFetchReader) => void;
+  responseEncoding?: NodeJS.BufferEncoding;
 }
 
 /**
@@ -160,7 +161,9 @@ export default class RestFetchReader {
       // how Node streams and setEncoding() handle decoding when the returned
       // chunks cross the boundaries of multi-byte characters (TL;DR: it works
       // fine, that's why we work with string and not Buffer here).
-      res.body.setEncoding(inferResBodyEncoding(res));
+      res.body.setEncoding(
+        this._options.responseEncoding ?? inferResBodyEncoding(res),
+      );
 
       await this._options.heartbeat?.();
       for await (const chunk of res.body) {
diff --git a/src/internal/ellipsis.ts b/src/internal/ellipsis.ts
new file mode 100644
index 0000000..39a2989
--- /dev/null
+++ b/src/internal/ellipsis.ts
@@ -0,0 +1,16 @@
+const ELLIPSIS = "…";
+
+/**
+ * The fastest possible version of truncation. Lodash'es truncate() messes up
+ * with unicode a lot, so for e.g. logging purposes, it's super-slow.
+ */
+export default function ellipsis(string: any, length: number) {
+  string = ("" + string).trimEnd();
+  length = Math.max(length, ELLIPSIS.length);
+
+  if (string.length <= length) {
+    return string;
+  }
+
+  return string.substring(0, length - ELLIPSIS.length) + ELLIPSIS;
+}
diff --git a/src/internal/inspectPossibleJSON.ts b/src/internal/inspectPossibleJSON.ts
index 04150ae..93f29ab 100644
--- a/src/internal/inspectPossibleJSON.ts
+++ b/src/internal/inspectPossibleJSON.ts
@@ -1,6 +1,6 @@
 import { inspect } from "util";
 import sortBy from "lodash/sortBy";
-import truncate from "lodash/truncate";
+import ellipsis from "./ellipsis";
 
 export default function inspectPossibleJSON(
   headers: { get(name: string): string | null },
@@ -65,7 +65,3 @@ function reorderObjectProps(
     Object.fromEntries(sortBy(entries, ([k, v]) => ranker(k, v))),
   );
 }
-
-function ellipsis(text: any, length: number) {
-  return truncate("" + text, { length }).trimEnd();
-}
diff --git a/src/internal/throwIfErrorResponse.ts b/src/internal/throwIfErrorResponse.ts
index 14cfa54..89dca40 100644
--- a/src/internal/throwIfErrorResponse.ts
+++ b/src/internal/throwIfErrorResponse.ts
@@ -36,7 +36,7 @@ export default function throwIfErrorResponse(
         const retryAfterHeader = res.headers.get("Retry-After") || "0";
         throw new RestRateLimitError(
           `Rate limited by HTTP status ${STATUS_TOO_MANY_REQUESTS}`,
-          parseInt(retryAfterHeader) || 0,
+          1000 * parseInt(retryAfterHeader) || 0,
           res,
         );
       }
diff --git a/src/middlewares/paceRequests.ts b/src/middlewares/paceRequests.ts
index f8e7a49..d2a12cd 100644
--- a/src/middlewares/paceRequests.ts
+++ b/src/middlewares/paceRequests.ts
@@ -1,16 +1,38 @@
-import type Pacer from "../pacers/Pacer";
 import type { Middleware } from "../RestOptions";
 import type RestRequest from "../RestRequest";
 
 const MIN_LOG_DELAY_MS = 10;
 
+/**
+ * Pacer is a class which allows to pace requests on some resource identified by
+ * the instance of this class.
+ */
+export interface Pacer {
+  /** Human readable name of the pacer, used when composing multiple pacers. */
+  readonly key: string;
+
+  /**
+   * Signals that we're about to send a request. Returns the delay we need to
+   * wait for before actually sending.
+   */
+  pace(): Promise<PacerOutcome>;
+}
+
+/**
+ * A result of some Pacer work.
+ */
+export interface PacerOutcome {
+  delayMs: number;
+  reason: string;
+}
+
 /**
  * Rest Client middleware that adds some delay between requests using one of
  * Pacer implementations.
  */
 export default function paceRequests(
   pacer: Pacer | ((req: RestRequest) => Promise<Pacer | null>) | null,
-  delayMetric?: (delay: number) => void,
+  delayMetric?: (delay: number, reason: string) => void,
 ): Middleware {
   return async (req, next) => {
     if (typeof pacer === "function") {
@@ -18,10 +40,10 @@ export default function paceRequests(
     }
 
     if (pacer) {
-      const { delayMs, reason } = await pacer.touch();
+      const { delayMs, reason } = await pacer.pace();
 
       if (delayMs > 0) {
-        delayMetric?.(delayMs);
+        delayMetric?.(delayMs, reason);
         await req.options.heartbeater.delay(delayMs);
       }
 
diff --git a/src/pacers/Pacer.ts b/src/pacers/Pacer.ts
deleted file mode 100644
index 226287e..0000000
--- a/src/pacers/Pacer.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * A result of some Pacer work.
- */
-export interface PacerDelay {
-  delayMs: number;
-  reason: string;
-}
-
-/**
- * Pacer is a class which allows to pace requests on some resource identified by
- * the instance of this class.
- */
-export default interface Pacer {
-  /** Human readable name of the pacer, used when composing multiple pacers. */
-  readonly name: string;
-
-  /**
-   * Signals that we're about to send a request. Returns the delay we need to
-   * wait for before actually sending.
-   */
-  touch(): Promise<PacerDelay>;
-}
diff --git a/src/pacers/PacerComposite.ts b/src/pacers/PacerComposite.ts
deleted file mode 100644
index 8ec87a1..0000000
--- a/src/pacers/PacerComposite.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import maxBy from "lodash/maxBy";
-import type Pacer from "./Pacer";
-
-/**
- * A Pacer which runs all sub-pacers and chooses the largest delay.
- */
-export default class PacerComposite implements Pacer {
-  readonly name = "";
-
-  constructor(private _pacers: Pacer[]) {}
-
-  async touch() {
-    const delays = await Promise["all"](
-      this._pacers.map(async (pacer) => ({
-        pacer,
-        delay: await pacer.touch(),
-      })),
-    );
-    const pair = maxBy(delays, ({ delay }) => delay.delayMs);
-    return pair
-      ? {
-          ...pair.delay,
-          reason: pair.pacer.name
-            ? `${pair.pacer.constructor.name} ${pair.pacer.name}\n${pair.delay.reason}`
-            : pair.delay.reason,
-        }
-      : { delayMs: 0, reason: "no pacers" };
-  }
-}
diff --git a/src/pacers/PacerQPS.ts b/src/pacers/PacerQPS.ts
deleted file mode 100644
index 002b67b..0000000
--- a/src/pacers/PacerQPS.ts
+++ /dev/null
@@ -1,147 +0,0 @@
-import random from "lodash/random";
-import type { PacerDelay } from "./Pacer";
-import type Pacer from "./Pacer";
-
-/** Start decreasing the delay (and thus speeding up requests) only when we have
- * less requests in the moving window than allowed by the desired QPS multiplied
- * by this factor. I.e. we don't speed up immediately when we're slow; we wait
- * until we're SLIGHTLY below the limits. */
-const DEFAULT_DECREASE_THRESHOLD = 0.75;
-
-/** Default moving window length. */
-const DEFAULT_WINDOW_SEC = 30;
-
-/** Below how many samples do we stop relying on samples to recalculate the
- * current fleet's average delay and instead keep using the previously
- * calculated (and saved) value for the delay. E.g. it doesn't make much sense
- * to rely on an average of 3-4 samples to calculate the average delay, it makes
- * sense to wait for more samples to come. */
-const MIN_COUNT_FOR_CENTRAL_TENDENCY = 10;
-
-/** The value here is multiplied by the fleet average to get the delay
- * increment/decrement step. It basically determines, in how many increments
- * would a "cold started" worker reach the current fleet's average delay. Or, in
- * how many steps would it reach delay=0 situation from the current fleet's
- * average if needed.  */
-const DELAY_AVG_TO_STEP_FACTOR = 0.02;
-
-/** Delay increments are jittered by +/- this proportion. */
-const DELAY_STEP_JITTER = 0.1;
-
-export interface PacerQPSBackend {
-  /** Resource key which this backend is operating on. */
-  readonly key: string;
-
-  /**
-   * Maintains the array of numbers somewhere in memory (time-value pairs),
-   * inserts a new time-value pair to the end of this list, and removes all the
-   * entries which are earlier than `minTime`. Returns the size of the resulting
-   * array and some central tendency statistics about its values.
-   */
-  push(props: {
-    time: number;
-    minTime: number;
-    value: number;
-    minCountForCentralTendency: number;
-  }): Promise<{ count: number; sum: number; avg: number; median: number }>;
-}
-
-export interface PacerQPSOptions {
-  /** The maximum QPS allowed within the rolling window. */
-  qps: number;
-  /** The length of the rolling windows in milliseconds. */
-  windowSec?: number;
-  /** Decrease the delay if the number of requests in the window has dropped
-   * below `decreaseThreshold` portion of the limit. */
-  decreaseThreshold?: number;
-}
-
-/**
- * Implements a very simple heuristic:
- * - increase the delay if we're above the QPS within the rolling window;
- * - decrease the delay if we're below the desired QPS.
- *
- * Each worker keeps (and grows/shrinks) its delay individually; this way, we
- * don't need to elect, who's the "source of truth" for the delay.
- *
- * Backend is a concrete (and minimal) implementation of the storage logic for
- * the pacing algorithm.
- */
-export default class PacerQPS implements Pacer {
-  private _isFirstTouch = true;
-  private _delay = 0;
-
-  constructor(
-    private _options: PacerQPSOptions,
-    private _backend: PacerQPSBackend,
-  ) {}
-
-  get name() {
-    return this._backend.key;
-  }
-
-  async touch(): Promise<PacerDelay> {
-    const windowSec = this._options.windowSec ?? DEFAULT_WINDOW_SEC;
-    const limit = Math.round(windowSec * this._options.qps);
-    const decreaseThreshold =
-      this._options.decreaseThreshold ?? DEFAULT_DECREASE_THRESHOLD;
-
-    const time = Date.now();
-    const delayPushed = this._delay;
-    const { count, sum, avg, median } = await this._backend.push({
-      time,
-      minTime: time - windowSec * 1000,
-      value: this._delay,
-      minCountForCentralTendency: MIN_COUNT_FOR_CENTRAL_TENDENCY,
-    });
-    const sumDivCount = count ? sum / count : 0;
-
-    // "Cold start": start with the fleet average delay.
-    if (this._isFirstTouch && this._delay === 0) {
-      this._delay = Math.round(avg);
-      this._isFirstTouch = false;
-    }
-
-    // If we imagine there is only 1 worker in the fleet, what would be its
-    // delay increment/decrement step. We use this number in a fallback
-    // situation, when we don't know much about the entire fleet average delay
-    // yet, or when this delay is too small to count on.
-    const singleWorkerDelayStepMs = Math.round(
-      ((windowSec * 1000) / limit) * DELAY_AVG_TO_STEP_FACTOR,
-    );
-
-    // Considering that there are multiple workers running, and that the current
-    // average fleet's delay is representative, what would be a delay increment
-    // to reach from delay=0 to that fleet's average delay.
-    const multiWorkerDelayStepMs = Math.round(
-      avg *
-        DELAY_AVG_TO_STEP_FACTOR *
-        random(1 - DELAY_STEP_JITTER, 1 + DELAY_STEP_JITTER, true),
-    );
-
-    // If average fleet delay is not representative yet, we fallback to a
-    // single-worker delay increment.
-    const delayStepMs = multiWorkerDelayStepMs || singleWorkerDelayStepMs || 1;
-
-    if (count > limit) {
-      // Increase the delay if the limit is reached. There is no "max delay":
-      // imagine we have 10 QPS limit and 10000 users; it's obvious that in this
-      // case, the delay between requests per a single user will be gigantic.
-      this._delay += delayStepMs;
-    } else if (count < limit * decreaseThreshold) {
-      // Decrease the delay if we're significantly under the limit.
-      this._delay = Math.max(0, this._delay - delayStepMs);
-    }
-
-    return {
-      delayMs: this._delay,
-      reason: [
-        `count=${count} per ${windowSec}s (limit=${limit})`,
-        `delay=${this._delay} step=${delayStepMs} delayPushed=${delayPushed}`,
-        `median=${Math.round(median)}`,
-        `sum/count=${Math.round(sumDivCount)}`,
-        `avg=${Math.round(avg)}`,
-      ].join("\n"),
-    };
-  }
-}