Rocksteady Studios has issued a patch that should resolve the DirectX 11 issues with Batman: Arkham City on 64-bit systems. Users of Windows Vista/7 32-bit are still advised to avoid running the game in DirectX 11 until further notice, but forum posts indicate that 64-bit users are also still experiencing severe performance issues with this patch.
With this latest patch, Steam users with the following Windows Operation Systems should avoid running the game under DX 11 until further notice:
Windows Vista 32 bit
Windows 7 32 bit
Users running Windows 7 32 bit or Windows Vista 32 bit should ONLY use DX 9 settings until a future patch that addresses this specific issue is released. We are actively working to address the remaining issues tied to DX 11 for users running 32 bit versions of Windows Vista or Windows 7.
Major fixes that this patch addresses are listed below.
Performance / hitching issues have been greatly improved for running in DX 11.
An issue with players running out of Video Memory or encountering a Rendering Thread Exceptions has been addressed. This was primarily affecting 32-bit Operating Systems.
A progression block after defeating Ra’s Al Ghul has been fixed. This was an issue that occurred primarily on lower end computer setups and is described as Batman not readying his Reverse Batarang.
A crash that occurred when scrolling between the Character Bios and Arkham City Stories has been fixed.
A crash that occurred when selecting “Press Start” immediately when available at the Title Screen has been fixed. The issue was described as crashing/hard locking around the DLC (Downloadable Content) check.