My baseline Mac Mini with the 320m GPU is running WIndows 7 Ultimate with the latest Bootcamp drivers. When I play a GoldSrc game like Counter Strike 1.6 or Team Fortress Classic, it becomes unbelievably laggy (about 5fps) in intense battles or areas with much smoke. Otherwise, it's smooth as butter. This is at any resolution or color quality. I'm running in OpenGL mode because Software rendering is slow in any case and D3D mode makes the game close and say "Display mode not compatible". Any way to fix this?