I have a NVIDIA GTX 970... there are tons of people getting the dx11 crashes just like mine with both nvidia and amd.

It only started (for most of us) around patch 3.4... before that, I never once had a crash... and I played for 6 months with this card before crashes.

I have researched fixes for this on multiple forums and no one has come up with a real fix that works 100%... SE should have fixed this before stormblood but continues to ignore it.