Ok, running nvidia gtx560 etc. etc. I'm sure its not a hardware problem as the game doesn't lag at all for me even on ultra but it crashes to desktop without a sound/warning. Read thru abit of the thread and realized most you guys have some freezing or audio looping occurring along with the crash but mine is a straight CTD. Not even one error message. I'm thinking its steam and shall be playing without using steam soon but its late for me on this side of earth so wondering if anyone else has a similiar problem test it too? so as to get a confirmation.