I had a couple of crashes after the new patch, but I fixed it by clearing the level cache folder. Make sure the game is closed, then go to C:\Users\"your username here"\AppData\Local\Larian Studios\Baldur's Gate 3 and delete the LevelCache folder. The game will generate it again when it runs. After I did that no more crashes. Not sure why it's a problem but worth a try. I also may just be imagining it but I think FPS improved after I did this as well.