We are playing on our own vanilla dedicated server, without mods.
Two of my friends had very nasty crashes. They appeared randomly and we tried almost everything to fix it. We did BIOS and SSD firmware updates and also driver updates, like chipset, graphics, audio etc… but nothing helped. Even a fresh OS installation did not help (we tried Windows 10 and 11). On the other side some of us could play for hours, without any issues.
We almost gave it up, but finally we tired to launch the game without Battleye, using the ConanSandbox-Win64-Shipping.exe file directly.
You won’t believe it but it worked. Both of them can play for hours now on our private server.
Unfortunately this will not work on official servers, but if it runs stable, you can at least play the game this way.
It’s very annoying and I was not able to find out, why this happened.
Very strange.
Edit: You have to launch the Steam client first and then the executable.