《蝙蝠侠：阿卡姆之城》暂时别用DX11 !!!!!!

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http://community.batmanarkhamcit ... -Issues-Please-Read

                        PC DirectX 11 Issues Please Read                                                                                                                                                                                                                                                                                       

                                        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.
        
In the meantime, a workaround for this issue  is to run the game with DX 9 instead of DX 11.  Instructions on how to  turn off DX 11 are listed below.   
  
We sincerely apologize for any inconvenience  with your gameplay experience and thank you all for your patience as we  work to resolve this issue.
  
Instructions for changing DX 11 to DX 9
The Launcher can be accessed on Games for Windows LIVE and Steam to change DX 11 to DX 9 in the Settings menu.  
Change both DirectX 11 Features and DirectX 11 Tessellation to OFF.
  
Games for Windows LIVE
Start > All Programs > Games > Right click on Batman: Arkham City and select Launcher > Settings
  1.       Open the Start Menu
  2.       Select All Programs and then the Games folder
  3.       Right click on Batman: Arkham City and select Launcher
  4.       Choose Settings then click on the arrow next to DX options to change
Steam:
Launch Steam Client > Library > Right click on Batman: Arkham City > Configure PC Options
  1.       Open Steam
  2.       Select Library
  3.       Right click on Batman: Arkham City and select Configure PC Options
  4.       Choose Settings then click on the arrow next to DX options to change