I
I did a fresh install and removed the larian studio folder... still crashed on saves.
I went back to a safe BEFORE i rested and used camp supplies, no more crashes.
Once you use anything but a camp supply pack it somehow corrupts your saved games after you used them.
Sucks that i lost 2 hours of play time but no more crashes. Go back to a save BEFORE you used food at rest, use camp supply pack!
I only use camp supplies, have for the last several rests. And my save is in the middle of the Zhent Hideout. The key for me is the creation of the temp directory when saving and it clearly not actually saving. Something is awry in the code all of a sudden.