I wouldn't have reported this but I've seen several other people with the same issue. For me personally I can play anywhere from 30 mins to 4 hrs before it shuts down. Maybe longer, I'm a poor judge of time when gaming. I've tried everything I can on my end as well as the others. We can't exempt the game from DEP and I've tried starting as Admin nothing works. I know the ones experiencing this are a minority but if you could please look into it, We would greatly appreciate it. If the problem is on our end feel free to slap me and tell what to do to fix it. I'll spread the word. :)I'm not that computer smart so please dumb down any answers as much as possible thanks.

Couple other systems having the same problem. I just took it from there post.
8 core 8320/8 gb ram/gtx 660 ftw edition

Intel Core 2 Quad Q9400 2.66 4 GB Ram GTX 550 TI