My main problem is not with Conan Exiles, but with Steam client.
The game would run if I can start it without using Steam to start it, but it only do so provided I just leave Steam running and not use it in any way, as if I try to do anything on the Steam client, it stops working but do not crash.
If that happens, you can still run the game if you can start it manually, but it wont work to play on servers or with paid content.