So at the risk of listing a bug that everybody is familiar with, I feel like I should at least put this out there in case it helps with debugging.
I have two 980TIs,
Win 10, latest Geforce, latest Cuda.
With heavier scenes, and even with CPU checked sometimes, I still get an occasional GPU Failure that I can't recover from. Closing photoshop and anything else won't fix the problem. I'd have to restart 3dsmax and THEN it works. Isn't there a way to 'fix' or 'reset' the GPUs without having to restart 3dsmax?