fearpoint
It has been happening with GTX 9 series as well.....
From my experience only certain DX11 games cause it, but I've had it occur with DX9 randomly as well. Trying to figure out what is causing it and haven't had the problem reoccur since I uninstalled the physx drivers.
This sounds similar, but when mine occurs the only course of action is a power cycle.
FWIW the issue is much more common while playing Battleborn, than my other games like Witcher 3. A game crash is one thing, but a hard lock that forces a power cycle to clear is not good. The last one while in Debug Mode, triggered my RAID drives to into a very long verification and recovery check. Thankfully nothing was wrong there when it completed.
Also to address Sajin's suggestion to which i never replied, to try re-seating the card and swap power cables. I Have done that and unfortunately it continues to happen.
I'm awaiting the RMA to ship at the moment.