Somehow the graphic settings didn't make much of a difference, although the default "low" settings seemed to be a bit more performant than the "ultra high" setting I tried at first...
I still had to fight a lot against camera angles (and camera jumpiness in general) as well as some clipping and having walls between me and the camera...
Also, repeating the whole "raft on Styx arriving at the quay" sequence will probably get very old very quickly.
This game certainly needs far more polish than could be done in the jam's timeframe...