--- a/rust/hwrunner/src/main.rs	Sun Nov 15 05:35:18 2020 +0300
+++ b/rust/hwrunner/src/main.rs	Mon Nov 16 01:41:42 2020 +0300
@@ -50,8 +50,11 @@
 
     let mut now = Instant::now();
     let mut update = Instant::now();
+    let mut render = Instant::now();
 
+    unsafe { window.make_current().unwrap() };
     let mut is_running = true;
+
     while is_running {
         let curr = Instant::now();
         let delta = curr - now;
@@ -100,9 +103,10 @@
             _ => (),
         });
 
-        unsafe { window.make_current().unwrap() };
-
-        engine.render();
-        window.swap_buffers().unwrap();
+        if render.elapsed() > Duration::from_millis(16) {
+            render = curr;
+            engine.render();
+            window.swap_buffers().unwrap();
+        }
     }
 }

--- a/rust/lib-hedgewars-engine/src/render/gear.rs	Sun Nov 15 05:35:18 2020 +0300
+++ b/rust/lib-hedgewars-engine/src/render/gear.rs	Mon Nov 16 01:41:42 2020 +0300
@@ -12,7 +12,6 @@
 
 use png::{ColorType, Decoder, DecodingError};
 
-use std::ops::BitAnd;
 use std::{
     collections::HashMap,
     ffi::OsString,