If the GPF occurs right as you try to start a game from the main menu, your save file might be the culprit.
If software updates don't work, manual configuration changes may be necessary. Arkham Asylum-"General Protection Fault!" Glitch(Need Help) batman arkham asylum general protection fault fix
On the Steam Deck, the GPF error is often related to the Proton version or missing Windows components. If the GPF occurs right as you try
: Force the game to use Proton GE (via ProtonUp-Qt) or Proton Experimental . Version 7.29 or 8.4 are frequently cited as stable for this title. batman arkham asylum general protection fault fix
: Use Protontricks in desktop mode to install the d3dcompiler_47 component, which can fix crashes at the splash screen.