Multiplayer Campaign CTD after occupying/sacking/razing settlements.

Playing a coop campaign, and after the last patch a few days ago, when either of us capture a settlement the game will instantly crash to desktop. Mods are used, but no overhauls. Interestingly it doesn't happen on all settlements, but the ones it does happen on are seemingly random.

I wondered whether anyone else had had this bug in the past few days.