my MW2 game is running horrible. the initial menus are fine but once i get into a game, it just slows down so much, very delayed. even if i pause it at that point, the mouse cursor on the pause menu is delayed and slow. i'm pretty sure my system should be able to easily handle this game as it has no problem handling Crysis Warhead on all enthusiast settings @ 1920 x 1080. i get an average of 45 fps on it. i haven't benchmarked MW2 but it's obvious something is wrong. any ideas?