Hi guys I recently changed my system from 5700x3d to a 9850x3d.

On the old System I had PROTON_ENABLE_WAYLAND=1 PROTON_ENABLE_HDR=1 game-performance %command% as Steam arguments and HDR was working.

When enabling it the screen would shortly go to desktop and then I could configure the HDR settings ingame. On the new System it crashes to desktop.

Here is the log file: https://paste.cachyos.org/p/72c86da.log

System: 9850x3d, RTX 4090, proton-cachyos-10.0-20260330-slr-x86_64_v4

Issue I cant use HDR. Help from LLM with the log was something with luminescense values wrong.

What can I do to use HDR? Gamesope is not an option as I tried it and it hard freezes after some time.

Your log link returns 503 error:

Try these launch options on 595 drivers

PROTON_USE_NTSYNC=1 PROTON_ENABLE_WAYLAND=1 PROTON_ENABLE_HDR=1 PROTON_VKD3D_HEAP=1 %command%

1. Some users also add DXVK_HDR=1 or test DXVK_HDR=0.
2. Ensure system HDR is enabled in KDE Plasma before launching, and set your display brightness to ~80-85% for calibration.

Clear Shader Cache + Verify Files

1. In Steam: Right-click Crimson Desert → Properties → Installed Files → “Delete shader cache” (or clear the whole ~/.steam/steam/steamapps/shadercache/ folder).
2. Then “Verify integrity of game files”.
3. This resolves many HDR-related crashes/glitches after hardware changes or Proton updates Other Tweaks:

   • Try the absolute latest Proton-CachyOS build (or switch to Proton Experimental/Hotfix temporarily).

   • Disable in-game Ray Tracing, Frame Generation, or Ray Reconstruction first — these often make HDR instability worse.

   • Test without any overlays (MangoHud, Discord, etc.).

Try running through Gamescope with --hdr-enabled and minimal flags (even if it froze before — combine with the PROTON_VKD3D_HEAP=1 option).

Thats all I can think of atm.

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Here is the link to the log file https://paste.cachyos.org/p/72c86da.log
only Gamescope starts the game with hdr all the other suggestions unfortunately not