I still think it’s a typical adrenalin crash, caused by software incompatibility.
The OP had swapped the card for a new one and issue was the same.
There were no driver timeouts after clean install under stress, it only reappeared after OP had reinstalled things like OBS and who knows what else. One of them I’m betting was causing a conflict.
This is a standard part of owning an AMD card, the drivers are buggy and there are a raft of known programs that conflict and cause driver timeouts
