Same here, after 20 hours gameplay or so i get every 15 min crashes when doing a questline in Ravensburg and Walden (helping the 3 vikings).
Tried reinstalling, verify game files, update drivers but not change.

This sucks and the game is unplayable after only 20 hours or so.
Can't finish the questline cause each time in Walden when i need to kill the priest it crashes and can't save when i am doing the quest.

Fix this or refund cause this is [censored] !!

Update to my previous post:

Quality mode did help! Where on performance mode I where unable to even get up the hill near the monastery where Fulke was being held prison (could not even see the monastery cause it crashed so soon), in Quality mode I could even enter the monastery.
I just ran up and killed like 3 man before I went true the window, but then when I saw the guy with the shield and the quest sign on his head (guard) CRASH....
So retry, ran up, did not killed a single soul, jumped inside, killed guards, no crash.
Damn now I need to go out to get a fire bottle...so I went out, got the bottle went in all went fine. God damn I finished the rescue quest...
I think it even helped that I waited, after I went out for the fire bottle and went inside again, a little bit in the menu (sound got horrible).

So to sum it up:
Performance mode (tried 6 times in total now) can't run up the hill....
Quality mode can finish the quest if I do not linger or kill a man and just run like crazy to the objectives (and maybe pause in the menu a little bit after sound issues).

Now with this information you must be able to troubleshoot the problem and hotfix this please.

By the way I'm also installing the game on my Xbox One X now to see what happens if I get another consistent crash location what happens on the One X. It seems like it is a quality/fps issue.
Really want to play this game but don't want to be playing crash test dummy on the series X or PC...
Maybe my One X or S can help me clear the areas I cant clear (did not cleared the monastery raid only quickly finished the quest objectives).

Fix please and any confirmation this information reached you would be appreciated.

I have the same problem. I first bought the gold version (so yes season pass) for the PC (MSI Suprim X 3080ti 32G mem 8086K no overclock w10 prof. legal edition all drivers/w10 up to date) and encountered several crashes after 20 or so hours of gameplay (see my other post for the location). Today I bought the Xbox series X version (also gold afcorse) and when I got to :
Pilgrimage to St. Albanes chapter 2 raiding the town to "find and rescue Fulke"
Each time i run up the hill with the raid group the sound cracks and stutters, then sound disappears partly and then seconds later the game crashes to the xbox desktop.
Each time I have this. Did it four times now and simply can't progress in the game atm (can't enter the town from another side either, getting close is crash).
I'm running performance mode on the Xbox Series X.

You really need to start playing the game and experience the crashes yourself so you can hotfix this...this is really bad and costed me almost 120 euro's for 1 broken game on 2 platforms...(19.99 euro helix credits included).
Tommorow I wil try quality mode on the xbox to see if I can pas that mission.

Same here, after 20 hours gameplay or so i get every 15 min crashes when doing a questline in Ravensburg and Walden (helping the 3 vikings).
Tried reinstalling, verify game files, update drivers but not change.

This sucks and the game is unplayable after only 20 hours or so.
Can't finish the questline cause each time in Walden when i need to kill the priest it crashes and can't save when i am doing the quest.

Fix this or refund cause this is [censored] !!