What I noticed, and it might have already been written by others (ain't gonna check 30 pages), is that the crashes 99% occur in menus for me. I can almost 100% replicate it by going to the menu where you buy the season pass (maybe knowing that is enough incentive for Ubisoft to fix it, they're losing money). Besides that menu, applying SHD levels seems like another good way to make the game crash.