I think the save file was from a previous update and I was playing it on the newest update. Not sure if that could cause it or not
I was a vassal at the time and had kids but they were not 18 yet. I would enter the retreat and when i clicked on the hermit to talk to him it crashed multiple times. Only quest at the time was to defeat the empire. Never got the dialogue options because it would crash before that. I tried it on a brand new campaign with nothing and it did not crash