Baldurs Gate 3 on my linux machine runs pretty good and smooth. Already died because I failed a persuasion/deception check which led to a party wipe. It wasnt uncalled for either and didn't came out of the blue. I really enjoy it.
I'm also playing Baldur's Gate 3 on my Linux machine. Besides some frequent crashes, which I haven't confirmed if they are the game or my aging hardware, it's been running fine. I'm currently waiting for it to transfer to my Steam Deck to see how it fares there. I'd love to be able to play in bed, but I fear I may lose a lot of sleep if I do that.
I too am playing on Linux after making the switch last month. BG3, surprisingly, runs perfectly right out of the box. No settings changes, no command line parameters, nothing. Hasn't crashed once. I'm really impressed.