So I tried everything in this thread to no avail. We searched for corpses with hp. We tried to swap the savefile (game just crashes violently after 2-3minutes). I tried to change every aspect of my graphic settings.
Things specific to my playthrough:
- We are multiplayer - only I have the problem and we are 3. - As far as we can remember the bug started the moment I entered Lower City (crash at the first time entering) but wasnt noticeable afterwards for some time (probably because we played for a while and I had no reason to change areas). - We didnt do much in Lower City fight wise - the fishmen at the Harbor are dead and Dolor lies dead at the Wine Tasting place. Both happened as far as we remember after I had issues. Everything checked multiple times. - We tried loading savefiles before we entered Lower City - still crashes for me - When we swap savefiles everything works fine for me until someone joins - Only thing we did different in regard to Act 3 is that we tried to fight Gortash before the ceremony (we failed..) so we reloaded and did the Gortash dialogue and then went to Lower City - We encountered a bug in Rivington with the Amulet and the laughing Monk. We looted the tomb before he could talk to his relative which broke the quest. It was the first thing I was thinking about. We will test if it changes anything.
IMPORTANT NOTICE: We played through the game twice already before that so I was in Lower City before that. To me it seems patch 3 made me have this problem because I rarely had crashes before that. I can load savefiles from Act 3 just fine from other playthroughs.