Some repacks use older "cracks" where the game’s anti-piracy measures (like gliding failures or room-specific lag) weren't fully neutralized.

If you are playing a repacked version of Batman: Arkham Asylum , you’ve likely hit the infamous "X-Ray Room" bug. This occurs in the Intensive Treatment area when Batman needs to use his Detective Vision to navigate a room filled with gas or enemies. For many, the frame rate suddenly tanks to 1–5 FPS, or the game crashes entirely.

Repacks often include an older version of PhysX that doesn't play well with Windows 10 or 11.

If none of these work, your repack might have a corrupted "BmGame.ini" file. Check the "Redist" or "Verify" folder in your repack directory to ensure all components installed correctly. Often, simply installing the provided in the repack folder (even if you have a newer version) fixes the shader rendering issues in the X-Ray room.