I just played the whole night mission with absolutely no problems! Seems that the beta drivers 162.18 are the problem here. So, I suggest that all who are having problems need to try to revert to the 158.22 set of drivers. MAKE SURE YOU UNINSTALL THE OLD NVIDIA DRIVERS FIRST!!!
***one other note....i didn't mess with any of the nVidia profile settings except to force the game to use SLI using the program nHancer.***
Here are the drivers I used that work!
Is there any config files I can display here so people know what settings I have the game set at? Also, maybe this topic should have some of the posts (dead battery) removed and then have it as a sticky.....just food for thought...