I would say the game now needs at least a RTX 20xx to run on max details, preferably a 2070 or higher.
I'm on a Ryzen 7 3700X, RTX 3070, the game runs great in 2k, all settings maxed out.
I'm not the one to discuss pros and cons of a curved monitor, I have one and am firmly in the camp that it does wonders to the field of view or at least our perception of it. I do realize that it's just a flair and many people, rightfully so, say it's just a waste of money

Edit: I am curious how do the 1660 do in BG3, anyone have one?