Can play all over england for hours, no issues.
Soon as i hit ravensthorp, after several minutes several things will happen.
Sound during conversations will suddenly stop and its gone alltogether, so really just no sound other then ambient, no voice overs, just the animations.
Even when i turn on subtitles, its blank, meaning as if nobody is talking, if i press B to skip texts sometimes lines will pick up again but drop again after half or maybe 1 full sentence.
Soundtracks will just stop and only ambient sound remains, only a reload will fix this, incl what i mentioned above.
Crashes, very very very likely to crash after or between 5 to about 10 minutes in ravensthorp, there is no real pattern here, you could be doing anything from walking to doing one of the quests for the event to gather coins, doesnt matter, it will crash.
When it crashes its a black screen to homescreen, can just load the game again but this reallllly shouldnt be happening guys and gals at ubisoft.