When I'm playing single player after about an hour of play my screen will freeze however sound will continue and if I press 'm' my cursor changes to the map one but doesnt display the map or if I press escape my cursor changes. I have attempted the alt-enter fix and all this does is bring the game back up with a black screen. I then have to close ARMA 2 with task manager. (Note that I am not playing nor have I installed OA)
Other than when it freezes the game runs perfectly no lag at all. I am running the latest video card driver. The RTP file that I see people refer to doesn't seem to have any information at the bottom regarding a crash but I'll post it here anyway: pastelink.me/dl/6c646d
Thanks!
My system:
Windows 8 64 bit
i7 3610QM @ 2.3 ghz
8 GBs Ram
Nvidea GTX 660M