Hiya @Ubi-oof, thanks for your reply! I think I solved the issue, and even if it wasn't caused by any of the fixes you provided me, your reply helped me to keep on and don't surrender to frustration!
After I unplugged the peripherals (ALL of them, I have a lot of Razer peripherals, plus a controller), I ended non-essential background processes (including NZXT Cam and all of Razer softwares) the crash seemed to be solved, but when I tried to fast travel to any location, the game crashed again, so I understood there was something else..!
I remembered about Windows Event Viewer, there I saw there was a problem with the paging file, it was only 500MB..! So I modified the settings, letting Windows control it and restarted the PC!
Then I opened Valhalla and everything was smooth, so I tried to connect back all the peripherals, one by one testing if the game could crash, and then I started all the processes I closed earlier. And the game still runs smoothly. So it was all paging fault!

Thanks a lot for your help and support!

Hiya @Ubi-oof, thanks for your reply! I think I solved the issue, and even if it wasn't caused by any of the fixes you provided me, your reply helped me to keep on and don't surrender to frustration!
After I unplugged the peripherals (ALL of them, I have a lot of Razer peripherals, plus a controller), I ended non-essential background processes (including NZXT Cam and all of Razer softwares) the crash seemed to be solved, but when I tried to fast travel to any location, the game crashed again, so I understood there was something else..!
I remembered about Windows Event Viewer, there I saw there was a problem with the paging file, it was only 500MB..! So I modified the settings, letting Windows control it and restarted the PC!
Then I opened Valhalla and everything was smooth, so I tried to connect back all the peripherals, one by one testing if the game could crash, and then I started all the processes I closed earlier. And the game still runs smoothly. So it was all paging fault!

Thanks a lot for your help and support!

Good evening. I have a huge issue and, after I tried a lot of options, still I can't play.
I state that I already played 41h and, until today, I always played with high fps and didn't have any kind of problem.
This morning I updated Windows 11 (updates codes are KB5022303 and KB890830, maybe that's not the problem, still..) and, after I reboot my PC, I tried to play ACV.
So I clicked on "Continue" and, in the loading screen where Eivor is in the Animus, after a few seconds, the game crashed and still crashes every time I try. No error code is shown, but I noticed that after the game crashes, even explorer.exe stops working fine. And even NZXT Cam, the software I use to check case temps and LEDs. I have to reboot them from the task manager to let them run again.
Only way I managed to go further the loading screen and play a little is downgrading graphic settings to lowest, but I don't understand why I have to play with those settings if I always played with maximum settings with 100+ fps..!
I already contacted the support submitting msinfo and dxdiag files, but maybe someone knows how to help me better here in the forum!

@XBL_Laberbacke tried to make a post myself but since it was my first I have to wait to be approved! Btw I have the same problem, was thinking it was just a problem of mine, but honestly I'm relieved I'm not the only one!
I read it's not the first time it occurs, let's hope they gonna fix it asap, this is the first week I could fulfill all the challenges!

Wandering through the forum I noticed it's not the first time that the challenges don't get the update.
I'm pretty sure I won a dice match, and I'm also pretty sure I killed with assassination tons of enemies, I also killed a few preys, and I used both my light bow and my flail to kill dozens of enemies.
Still every challenge rating is 0.
Just lemme know if, when it will be solved, I have to do everything again or the score will be fixed as well.