Compatibility Report

• Name of the game with compatibility issues: Halo: The Master Chief Collection
• Steam AppID of the game: 976730

System Information

• GPU: RX 470
• Video driver version: mesa 25.1.5-arch1.1
• Kernel version: 6.15.5-arch1-1
• Proton version: 9.0-4
• This issue also occurs on Steam Deck for more uniform hardware

I confirm:

• [X] that I haven't found an existing compatibility report for this game.
• [X] that I have checked whether there are updates for my system available.

Symptoms

Game regularly crashes, often when loading or leaving a game from the menu. Will often freeze and hang for a moment.
I have also tried clearing shadercache files for the game to no luck.
Happens roughly half the time, the game will freeze and crash, exiting.
Viewing the MCC log folder under AppData in the proton prefix for the game shows no relevant crash logs.

I opened steam via terminal in desktop mode to gather logs but the crash itself does not trigger any errors/output logs different from a successful launch, play and close of the game.

This issue appears to happen on both desktop Linux and on the Steam Deck.

Found a couple Steam Discussions where it looks like other people are seeing this issue:
https://steamcommunity.com/app/976730/discussions/0/600786717156372211/
https://steamcommunity.com/app/976730/discussions/0/746030524012959368/

Reproduction

Don't have a super strong pattern identified yet.
Open the game, run a singleplayer (Campaign or Firefight) or a multiplayer (Social games or custom game browser) and observe.
If it does not crash, exit game and launch a new one until it does. It usually doesn't take long with how often it crashes.

steam-976730.log