Warner Bros. has recently apologized for the DX11 issues that have surfaced in the PC version of Batman Arkham City.
Even after being delayed the PC version has had numerous using DX11 instead of DX9. WB released the following statement about the problem:
“We have received reports of performance issues from players of Batman: Arkham City on PC. After researching the matter, we found that running the game with DX 11 is causing the performance issues. We’re working on a title update to address this matter and expect to make it available in the near future.”
WB went onto recommend all users to use DX9 rather than DX11 until the problem is fixed adding, “We sincerely apologize for any inconvenience with your gameplay experience and thank you all for your patience as we work to resolve this issue.”