I said I would report back. It appears the video driver stopped responding messages have stopped. The last one I got was 10:00 a.m.
I ran a performance check on both of my systems using 3D Mark. With the two GTX 680s on single 1920x1080 monitor, I was getting about 11605 (15593, 10153, 4297) in Firestrike in Windows 10 and 8.1.
GTX 980 (2) system is 19513 (27367, 14134, 7559)
I am having a hard time trying to understand why my game, Borderlands 2, runs smoothly in Windows 8.1 but seems choppy in Windows 10. Perhaps it relates to some debugger or some other Preview build utility causing the lack of performance, but at least I am not seeing all the video error messages. The Nvidia drivers are different for Windows 8.1, so maybe...