I have a 7950 gx2 and good cpu and all that but i cant run rainbow six vegas! i can play it on max with no lag but i move the crosshiars around and its not very responsive at all, ive tried upping the mouse sensitivity but starts to jump ive got latest drivers...i mean the pfs is an ok 25per sec or so but the crosshairs arent very crisp and responsive, not at all like fear where i can move it for the slightest sniper shot