Performance has been dead for me since the latest update

I don’t know what they did in the Thursday update but it has ruined this game on my PC. I put a day and a half of in game time into this game over a few days on my system and this game ran so smoothly and then after that update the game chugs to an unplayable level even on the lowest possible settings.
I’ve tried reinstalling the game, reverting back to old drivers (AMD btw), everything I can possibly think off to remedy the issue but the game performance is unplayable.
Really annoying as it’s just wasting days of the game pass month I bought specifically for this game until they fix this… if they ever do.