I told my friend to update his Radeon Drivers, he went from 19.12.1 to the recommended 20.4, I guided him through it and made sure he did it correctly. After the update, he couldn’t go fullscreen in games (Fortnite, Valorant, Minecraft) without constant blackscreening. (The games work in windowed mode) After this, we tried;
DDU + driver reinstall
DDU + driver reinstall in safe mode
DDU + factory reset (of GPU) + driver reinstall in safe mode
Disabled Enhanced Sync
DDU + installed driver version he was on before
Factory Reset + Installed latest driver version
PSU power cycle + replugged pcie cables
And the problem still persists.
The specs are; r7 2700x
ASUS STRIX B450F Gaming
Powercolor Red Devil 5700xt
2x8gb 3200 cl16 Corsair Vengeance Pro RGB
Crucial P1 1TB
And it’s a 75hz AOC Freesync monitor
I have the exact same card. It's running fine on 20.5.1. Just disable "hardware acceleration" on steam, discord, epic (any game launchers) and any browsers you use (Chrome, edge).