Hello @Speedhunter-NeoX, we're using one issue report per unofficially supported game title, and usually I'd transfer this issue report to #1937, but there's no usable details here to ponder with your third party build of Proton. Feel free to add a note to the older compatibility report with logs.
Closing as a duplicate.
ge-proton9-26x1 2025-03
Compatibility Report
System Information
I confirm:
Symptoms
Is there a way to fix the game crash? Sometimes it won't start, and when it does, it often crashes in online mode, especially when you're in combat.
I try to make it run on Steam Deck:
https://www.protondb.com/app/386180?device=steamDeck