AAAGGGHHHH. I went back hours and reloaded an old save and tested the long rest. Well, it didn't crash, so I thought I was all good. I have started the "Save the Duke" quest so many times, which is where the save was (right before helping break down the door to start it). Went through, saved both people and looted everything, because why not. Haha. Well I went back to the fountain out front and clicked to end the day. Went to long rest, and crashed again. Seems to be some kind bug with the quest.