Ok, this worked very well for me.
My Rig
Ryzen 7 3700X - default freq
Asus RTX 2060 - default freq
32 GB RAM DDR4
SSD
WIN 10 20H2, fully patched
From patch 1.05, game was unplayable: every 1/2 mins in game, I was out on my desktop, with the same GPU error of all of you.
I made a clean install of WIN10, reinstall the whole game, clean the C++ redistributable, fixed the AMD SMT with the new hexedit code, and so on.
Nothing changes.
But when I erase that AppData folder, BAM, I was in, with a stable game.
So I made another test: I close the game, waiting the appdata folders appears with the new config files and restart the game from Steam.
1 min ingame and I had a crash.
Erase the folder, relaunch the game, and 45 mins without a crash.
I know, it's annoying, but if this "trick" continue to work, I'll continue to use it until a patch that can fix all of this things.
I hope it will help you guys