You have an NVIDIA GPU but old drivers, or you are using an AMD GPU. Fix: Update your GPU drivers. If you have an AMD card, set PhysX to "Low" or "Off" in the game settings. The patch cannot emulate PhysX on AMD hardware.
The true hero for PC gamers has been the community. The most critical download for Batman: Arkham City is not an official executable but a collection of fan-made fixes, primarily the mod or the DX11 Crash Fix . batman arkham city patch pc download