diff --git a/engine/sdl2.py b/engine/sdl2.py
index 822ef2f..22eaed3 100644
--- a/engine/sdl2.py
+++ b/engine/sdl2.py
@@ -134,6 +134,8 @@ class GameWindow:
             self.performance = (sdl2.SDL_GetPerformanceCounter() - performance_start) / sdl2.SDL_GetPerformanceFrequency() * 1000
             if self.performance < self.delay:
                 delay = self.delay - round(self.performance)
+            else:
+                delay = 0
             sdl2.SDL_Delay(delay)
             
     def close(self):
diff --git a/rats.py b/rats.py
index f91cca8..05ae3a3 100644
--- a/rats.py
+++ b/rats.py
@@ -89,8 +89,8 @@ class MiceMaze(controls.KeyBindings):
 
     def play_sound(self, sound_file):
         if self.audio:
-            #subprocess.Popen(["aplay", f"sound/{sound_file}"])
-            self.engine.play_sound(f"sound/{sound_file}")
+            subprocess.Popen(["aplay", f"sound/{sound_file}"])
+            #self.engine.play_sound(f"sound/{sound_file}")
 
     def graphics_load(self):
         self.tunnel = self.engine.load_image("Rat/BMP_TUNNEL.png")