i have this problem for a week. i thought it was some problem from my pc and turns out it was the driver.
i've tried to updated from 20.1.4 to newest 20.3.1 still didnt fix the blackscreen problem. also did to install the older 19.12.1 and now newest 20.5.1 still not fixing the issue.
it happens when i play dota. it look like these.
also when i played apex, now the FPS dropped compared to previous driver and always crash/blackscreen after the 2nd game.
my graphic card is Asus RX 580