I noticed this issue since i play Left 4 dead 2, im so happy with this card really it runs anything on 1920x1080 maxed out without any kind of problems, anyway, while i play either l4d2 or cod mw2 sometimes it slows down for a bit and suddenly it gets back up working just fine so its more like random it seems, it runs nice with the dust, smoke, fire and when there's nothing it slows down and gets back up when it shold slow down (fire, explosions etc) I've tried reinstalling drivers, deleted old ones and reinstaleld latest CCC, i dont know what to do i've tried lowering settings on these games and i get the same problem so its got to be something else, probly a hotfix out there? tweak? thanks system specs: Windows vista ultimate 64bits Athlon II x2 3.0mhz 4 GB ram Ati Radeon 4850 HD