A hotfix is now rolling out to address some of the crash and performance issues since the latest update. More info over here: https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=960877#Post960877

If the issue persists on the latest version of the game, please do reach out to our Support team! https://larian.com/support/baldur-s-gate-3#modal