http://bugs.winehq.org/show_bug.cgi?id=23832
--- Comment #4 from Ivan vaniaz@msn.com 2011-04-17 09:06:48 CDT --- Unreal 3 has the same problem - it does not preload game resources. When you fire weapon it stutters for a second, successive shots go fine. Although level geometry and textures are preloaded, so you don't get freezes just running around.