Hello.
Please make a apitrace of the game with wined3d or on Windows if possible. https://github.com/doitsujin/dxvk/wiki/Using-Apitrace
If it doesn't work with wined3d could you also post a full proton log? Wanna see if loads any d3dcompiler or d3dx11 dll's
Seems like someone else found a workaround: removing the steam/steamapps/common/Knights of Honor II/Sovereign_Data/StreamingAssets/THQNO/THQNOnline/overlay folder makes the game function, and not crash anymore.
proton experimentalx1 2022-12
The game Knights of Honor II: Sovereign crashes during the end of loading, The crash is described in Player.log.
Software information
Knights of Honor II: Sovereign, a Direct3D 11 game using the Unity engine. Minimal requirement is Radeon HD 7870 / GeForce GTX 750-Ti. Recommended requirement is Radeon RX 580 / GeForce GTX 1660.
Windows users haven't reported such issues. Both Nvidia and AMD GPU users are reporting this issue on Linux. Because it's a Steam game, it's most likely using DXVK for Linux-users.
System information
Log files
Sovereign_d3d11.log
Sovereign_dxgi.log
Player.log