Nah its not that, i never had to have it disabled before i got this new gfx card, plus Crysis does the samething. I even tried running the gfx cards fan at 100% to see if it would stop it from doing it but it didnt. is werid usually when its a gfx card problem the whole PC would freeze up and you wouldnt be able to get back to windows, but with this problem im able to control/alt/delete back to the desktop and close the game down, then the PC is fine