This is beyond frustrating, here's what I did:
-With my 1080 (which never showed errors before).
-Installed Windows 10 from scratch (Drive formatted).
-Installed Nvidia's latest drivers (460.97)
-Installed Steam and Dragon Quest XI (Latest game I was trying before the reinstall).
It crashed almost instantly. To add more detail since some people is getting different issues here; my error is getting the black screen while everything else works, and I don't recover monitor output until I restart the system. There are no hard crashes, the driver times out, be the OS keeps running. I'm beginning to worry something related to the hardware got borked thanks to the 3080, It's getting harder to find a good explanation, and I'm running out of options to test.
May check going back to 60Hz and see if this keeps crashing..