not sure. All I know is the farther into the story I got the more issues I would find. Invisible buildings, weird audio with anything water/liquid (streams and the alchemy station), NPCs who floated instead of walking, quests that seem to give you options but you cannot use said options so you either “fail” the mission or have to complete it a different way, been stuck on invisible doors, walking up stair cases I had to crouch, Hans Capon got stuck on a wall and then just warped through it, corrupt save files upon completion of Robber Barron, crap graphics in towns for like the first 3-5 min I’m in them until they render, horse getting stuck on stuff, mini freezes, infinite loading screen, a few crashes, invisible weapons, all kinds of stuff.
However, when I started my 2nd run, I deleted pretty much all my first run saves except the last 5 or so to clear the memory a bit(i’ve heard the more saves you have the more problems you have and the longer you run the game in a single session without a reset the higher chance of crashing) so I deleted most all of it and started fresh.
So far, the only thing I’ve noticed is I had to crouch up some stairs and I got a glitch in an Inn, Uzhitz I believe, where after the Priests Godwin mission I cannot climb the ladder to my bed and the alehouse maid is frozen in place again…that’s it though that I can think of. Have not tried known bugged quests because I have not heard they are fixed and I’m still running 1.2.5 on Xbox One
In my personal experience the game has a harder time functioning the more save data you have, the longer you run in a single session and the further along you advance the main story…Specifically right about Needle in a Haystack where you become a novice Monk. Hope this helps