Your system information

• Steam client version (build number or date): 1738026274
• Distribution (e.g. Ubuntu): Arch Linux
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: Nvidia

Please describe your issue in as much detail as possible:

When I install & start Dead by Daylight on my PC, it starts up and I can create a custom game. After starting the custom game, DBD alerts me:

You have been kicked from the Server because of a failure to validate your account 
through Easy Anti-Cheat (error code 4)

Additional Info: Anti-cheat client protection not active (NullClient)

I have tried uninstalling the game, removing the prefix, verifying the game files, switching to a different Proton-version. Everything ended up in the same error.
I can play for a few seconds, until the DBD server kicks me.

I do own a Steam Deck and on the Steam Deck, DBD works flawlessly without tinkering. (Last Checked: Today in the morning)

I have generated a proton-log, if this is going to help: steam-381210.log

Steps for reproducing this issue:

1. Install DBD
2. Start a custom game
3. observe