Topic pretty much says it all. I played Diablo 2 Resurrected obsessively for months after launch, and generally found performance to be smooth. Now it appears to not be using my GPU at all, and in effect, I am totally unable to play the game. I can’t actually see, but it appears that my framerate is around 10 FPS in menus, and frequently dips into the low single digits during gameplay.
I’m running a 2060 and a CPU that is more than capable of playing the game, and indeed played it on maxed out settings at smooth framerates for several months leading up to the recent patch.