CS2 crashing hard, bringing kwin down with it since Nov 26 update. Running CS2 as Wayland native.

[Bulletdust]

Steam Beta Branch: Stable Client
Steam Version: 1763795278
Steam Client Build Date: Sat, Nov 22 6:00 PM UTC -08:00
Steam Web Build Date: Sat, Nov 22 5:35 PM UTC -08:00
Steam API Version: SteamClient023
KDE Neon User Edition 6.5.3, kernel 6.14.0-36-generic (64-bit)
CS2 Build ID: 20940526
CS2 Installed content updated: Nov 26, 2025 at 11:28AM.

• Opted into Steam beta? No
• Have you checked for system updates? Yes, everything up to date.
• GPU Nvidia RTX 4070S
• CPU: Intel i7-8700k
• Graphics drivers: Nvidia proprietary 580.95.05 installed correctly using Nvidia Launchpad PPA. Running a Wayland session.

Game launch options: gamemoderun mangohud SDL_VIDEO_DRIVER=wayland %command% -threads 12 -high -w 1920 -h 1200

Game launches, progresses past the yellow Counterstrike 2 splash screen to the main menu. Select Play, select Deathmatch, select maps and click 'Go' to join a game. Can join a game and game starts loading, but before game starts it crashes hard bringing kwin and all other running applications down with it. Game sounds keep playing in the background until cs2 process is manually killed.

Running the game as xwayland everything runs fine, but as usual performance isn't as good as running the game Wayland native, with CPU utilization running as xwayland hovering around 50% (Wayland native achieves CPU utilization of ~80 - 95% with a corresponding increase in performance).

Have tried verifying game files, game files all OK, no issues found.

No GUI error reported on screen.

Steps for reproducing the issue:

1. Launch game as Wayland native.
2. Select Play
3. Select game mode (I only play Deathmatch).
4. Select maps.
5. Click 'Go' to join a game.
6. Client finds game, game starts loading.
7. CS2 Hard crash bringing kwin and all background applications down with it.

[maskina2k]

I have the same issue, running cs2 on bazzite. Io to date bazzite, and cs2 on rtx 5080 and 9800x3d. Im launching cs2 from steam. I get into deathmatch, but game crashes after 1-3 respawns.