Have no idea what else to do. Maybe just waiting for a patch?
Maybe shorten your BG3-sessions. In my case, these hard-crashes only ever occurred at the end of longer stints (like 3, 4 hours). Although, like almost all of this, this could be just a coincidence.
Oh, and I am now getting desperate and tried the "slow HDD"-option in the video-settings. It only uses up slightly more system and video RAM (sys is now slightly over 12 of 32 GB, VRAM at 7.5 of 12 GB), and perhaps having the game accessing the SSD less frequently will put less of a strain on the system. *shrug*
Another thing I did after the last hard-crash was to abandon the unvervolted profile for my GPU while playing BG3. I went with the Auto OC curve Afterburner generated for me, which had proved very stable both in other games and in stress-testing. Granted: The undervolted profile also held up under some brutal and long stress-tests (or I wouldn't have used it), but who knows? If this happens again, I'll try running the GPU on stock-settings, next or perhaps even switch it to its "SILENT"-BIOS.
I also wonder what will happen once I get to Act III in my current playthrough. I'm still in Act II and both it and Act I were trouble-free except for that one hard crash. Perhaps once I get back into Act III things will take a turn for the worse. Performance is markedly worse once you get to the city. Disabling Dynamic Crowds helps a bit, but the drop in performance is very noticeable still. Plus I'm pretty sure Act III hasn't been optimized to the same degree as Acts I and II, so ...
S.
