I rolled it back but it crashed as soon as I started up the rolled back version (couldn't even get past the Larian Studios logo). Got pop-up messages about unofficial mods, broken/unverified files that couldn't line up with the game files, etc. Made me run file verification via steam and found 4 files missing (the patch #2 and it's hotifxes lol, obviously those were the ones missing). Even running it as admin without steam, it would still crash immediately. So I guess there's no way to run it without the full updates in place...which sucks. Steam automatically redownloaded those 4 files without my approval.
Edit: if anyone else wants to try, I followed the directions here:
https://www.makeuseof.com/how-to-downgrade-steam-games/?newsletter_popup=1Here''s the BG3 depots page:
https://steamdb.info/app/1086940/depots/Was hoping maybe when it redownloaded just those, it would fix itself...but no, still the same issues when I started it back up.
I think I have tried LITERALLY every single possible fix in existence. It's truly up to Larian at this point. Really really hope they are aware of this and are working on it.
Please submit a bug report if you haven't:
https://larian.com/support/baldur-s-gate-3#modal