Interesting, after reinstalling it would crash a few times, with the LariLauncher running I would not see any popup in the Reliability Monitor about it. After each crash I let it check the Integrity of the Game Files and after two or so it stopped and I could play for 3 hours strait without any crash.
But as soon as I started to stream on Discord, not 5 minutes in... crash.

Baldurs Gate 3 is still a really buggy mess. At least Patch #3 made shadows not look like crap.