Same error here. I thought that was due to my old PC (i'm running an AMD FX8320 + Nvidia 770 GTX), but then I found this thread. In fact, the game is running very well (more than 70 FPS all the time), until I get the error. In my case, the screen freezes but the sound still works in the background. Then I enter to the tasks admin and that's when I get the error mentioned above.