So I bought and downloaded Call of Duty 4 off the Mac App Store last night, and it runs horribly. Going to be honest here, I pirated it a little while ago, while on Snow Leopard, to make sure it ran on my system before buying it. It ran fine, and I finished half the campaign. Now it runs horribly in single player and multiplayer. I turned the graphics as low as they can go, with a resolution of 8xx X 6xx or something similar, and got around 23 FPS in a small room in multiplayer, with it going to around 15 outside. Does anyone else have these kinds of problems? Any way to fix it? Thanks!