diff --git a/stepmania/src/StepMania.cpp b/stepmania/src/StepMania.cpp
index c369483262..2258a6bc74 100644
--- a/stepmania/src/StepMania.cpp
+++ b/stepmania/src/StepMania.cpp
@@ -879,12 +879,14 @@ static void GameLoop()
 		 */
 		SCREENMAN->Draw();
 
-		/* This is unneeded in OS X. The OS handles all of this for us. */
-#if !defined(DARWIN)
-		if(g_bHasFocus)
-			SDL_Delay( 1 );	// give some time to other processes and threads
-		else
+		/* If we don't have focus, give up lots of CPU. */
+		if( !g_bHasFocus )
 			SDL_Delay( 10 );// give some time to other processes and threads
+#if defined(_WINDOWS)
+		/* In Windows, we want to give up some CPU for other threads.  Most OS's do
+		 * this more intelligently. */
+		else
+			SDL_Delay( 1 );	// give some time to other processes and threads
 #endif
 	}
 }