@orcbeard92 thanks for your answer. I already tried a few times but that letter never shows up in the postbox. I will keep on trying. Thanks!

actually after installing wrath of the druids everything was fine, no more crashes to desktop and I could play for hours. But recently I started getting crashes again, I had one just now. I was just running around in the middle of Ireland and it crashed to desktop. I have no idea of what might be causing this.

@ubi-keo thank you for your response. I'll post here a link for the video, please message me if you can't watch it:
https://drive.google.com/file/d/1LOrJu7WsIFo0IgAbC4qeOtcZFkEA4htO/view

@orcbeard92 thanks for your answer. I already tried a few times but that letter never shows up in the postbox. I will keep on trying. Thanks!

I only got the season pass recently after playing many hours on the standard edition...can I still play the Legend of Beowulf? I've seen the guides online but I can't access the letter from Sunniva

@braudrist I did a clone, but that was just windows 10. I had the game in another disk, now the game is in the same ssd as windows. Btw the crash to desktop is back, so this also had no effect.

Some time ago I posted here that I was also having these 'random' crashes to desktop after 5-15 minutes of play.
Last week I updated one of my HDD to a SSD and I moved the game installation to this disk (previously it was in another HDD).
So, since I did this I had zero crashes and actually managed to finish the main story and a lot more. So, I don't know if the crashes are related to this or even if they will come back, but I had zero crashes last week and played quite a bit.
If the crashes come back I will post about it here.

And it just crashed on the map. It was the first time that it crashed on the map. The log file shows the same thing, 5 disconnects and that's it, a crash.
I think that some of these solutions will not work, yesterday I played for 3 hours straight and no crashes. No changes on my system, yesterday before playing I downloaded the new patch, installed the latest nvidia drivers and played for 3 hours. Today I start the game, go to the map, and bam, crash to desktop.

I am another victim of this issue. Before the latest patch everything was fine. Could play for hours without any issue. After the patch I get these crashes from 5 to 20 minutes or so into the game. It's completely random. I also checked the logs and I see this:
[17452] 2021-03-14 22:27:45   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:28:15   [12704]   INFO    UplayGameConnectionHandler.cpp (364)       Game with process id 11320 connected (API version: 2.3.0).
[17452] 2021-03-14 22:28:15   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:28:27   [12704]   INFO    UplayGameConnectionHandler.cpp (364)       Game with process id 11320 connected (API version: 2.3.0).
[17452] 2021-03-14 22:28:27   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:28:46   [12704]   INFO    UplayGameConnectionHandler.cpp (364)       Game with process id 11320 connected (API version: 2.3.0).
[17452] 2021-03-14 22:28:46   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:43   [12704]   INFO    ApiProcessConnection.cpp (289)          Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:43   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:43   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:43   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:43   [12704]   INFO    UplayGameConnectionHandler.cpp (317)       Game with process id 11320 disconnected.
[17452] 2021-03-14 22:30:44   [ 9144]   INFO    StartView.cpp (812)                                
[17452] 2021-03-14 22:30:44   [ 9144]   INFO    StartView.cpp (812)    

After every crash I check the log and can see that the game is always connected/disconnected. This seems to work. But if the game gets 4 or 5 disconnected in a row then it crashes.     

This is SO annoying.

Some time ago, it was doing this, I deleted the logs and had to do a windows update. It worked fine for a few days, then it came back again. I see people sharing here all sort of "solutions". I think that none of this works. This is some other issue related to the game's connection to ubisoft's servers. I don't think that there's much that we can do until they fix this.
It would be great if someone from ubisoft could come here and say something: "we are aware of this but could not find a solution yet", "we know what to do and it will be fixed in the next patch", "this is not something that you can fix with drivers or other setting, it's on our side" to spare us the time...some answer would be nice.