diff --git a/Cargo.toml b/Cargo.toml
index ad48882..1bc898a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -81,10 +81,6 @@ name = "raymarch"
 path = "src/bin/raymarch.rs"
 required-features = ["build_raymarch"]
 
-[[bin]]
-name = "medium_test"
-path = "src/bin/medium_test.rs"
-
 [[bin]]
 name = "color_test"
 path = "src/bin/color_test.rs"
diff --git a/src/bin/medium_test.rs b/src/bin/medium_test.rs
deleted file mode 100644
index 9310c1f..0000000
--- a/src/bin/medium_test.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-extern crate rust_pathtracer as root;
-
-
-
-
-
-
-
-fn main() {
-
-    
-
-}
diff --git a/src/lib.rs b/src/lib.rs
index b15bf5b..86b8a72 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,7 +7,6 @@ extern crate log;
 #[macro_use]
 extern crate paste;
 
-
 #[cfg(feature = "minifb")]
 use minifb::{Key, Window, WindowOptions};
 use rayon::prelude::*;
@@ -71,9 +70,7 @@ pub fn window_loop<F>(
     F: FnMut(&Window, &mut Vec<u32>, usize, usize) -> (),
 {
     let mut window = Window::new("Window", width, height, options).unwrap();
-    window.limit_update_rate(Some(std::time::Duration::from_micros(
-        (1000000 / max_framerate) as u64,
-    )));
+    window.set_target_fps(max_framerate);
 
     let mut film = Vec2D::new(width, height, 0u32);
     while window.is_open() && !window.is_key_down(Key::Escape) {
diff --git a/src/renderer/naive.rs b/src/renderer/naive.rs
index 9222373..11efec9 100644
--- a/src/renderer/naive.rs
+++ b/src/renderer/naive.rs
@@ -1,5 +1,4 @@
 use super::prelude::*;
-use crate::prelude::*;
 
 use crate::integrator::*;
 
diff --git a/src/renderer/prelude.rs b/src/renderer/prelude.rs
index c8ef139..6aa962e 100644
--- a/src/renderer/prelude.rs
+++ b/src/renderer/prelude.rs
@@ -1,3 +1,4 @@
+pub use crate::prelude::*;
 pub use crate::parsing::config::{Config, IntegratorKind, RenderSettings};
 pub use crate::profile::Profile;
 pub use crate::world::{EnvironmentMap, World};
diff --git a/src/renderer/preview.rs b/src/renderer/preview.rs
index 285e0e5..f852bcb 100644
--- a/src/renderer/preview.rs
+++ b/src/renderer/preview.rs
@@ -1,5 +1,7 @@
+// only needed because the actual code that uses these imports is gated
+// behind a feature flag which the compiler does not seem to detect even though 
+#![allow(unused_imports)]
 use super::prelude::*;
-use crate::prelude::*;
 
 use crate::parsing::config::{Config, RenderSettings, RendererType, Resolution};
 // use crate::integrator::*;
diff --git a/src/renderer/tiled.rs b/src/renderer/tiled.rs
index fb19b44..fe49265 100644
--- a/src/renderer/tiled.rs
+++ b/src/renderer/tiled.rs
@@ -1,5 +1,4 @@
 use super::prelude::*;
-use crate::prelude::*;
 
 use crate::integrator::*;