It looks like the Windows update that broke some games and the update that was supposed to fix it broke DX11/DX12 for me.
First I thought that it was these 419.35 drivers or that my second 2080 Ti was starting to go Space Invaders but OpenGL and CUDA seems to work ok. Tried 418 and 417 drivers...
Second try with Zotac 2080 Ti AMP...got it today...
...and just read from NVIDIA forums that somebodys new AMP died after 4 days this week :(
Not feeling very hopefull at the moment.
Someone posted this on NVIDIA forums yesterday:
"All RTX cards produced in September/October have a defective VRM components (no matter which manufacter/memory).
If you buy a RTX card, make sure your card is produced in November and later (Check S/N).
Sorry for my bad English."
Then says later...
Picked up Palit 2080 Ti dual from post office at Thursday 13th, gave it 50+ hours testing during week and now this Friday it started giving me Space Invaders.