Performance Improvements: The following performance improvements were observed with this release of AMD Catalyst 10.11: -Battleforge : Performance increases up to 3% on ATI Radeon HD 5800 Series single and CrossFire configurations with anti-aliasing disabled. -STALKER – Call of Pripyat benchmark: Performance increases up to 5% on ATI Radeon HD 5800 Series single and CrossFire configurations Resolved Known Issues for the Windows 7 Operating System This section provides information on resolved known issues in this release of the AMD Catalyst 10.11 software suite for Windows 7. These include: -Running fullscreen DirectX 9 applications/games after enabling Aero effects and rebooting no longer causes the system to randomly stop responding -Primary display no longer blanks out intermittently during "World in Conflict: Soviet Assault" DirectX10 gameplay with CrossFire and Dual Monitor enabled -"Stone Giant" DirectX 11 demo no longer intermittently fails in fullscreen mode with CrossFire enabled under Multi-GPU configurations on some cards -Task switching out of "Battlefield: Bad Company 2" and then back into the game no longer causes CrossFire to become disabled -Enabling in-game Anti-Aliasing and utilizing Edge-Detect filters no longer causes smoother lines but blurry textures when compared to the Standard filter on some cards -Desktop line corruption is no longer observed after hotplugging the HDCP display on some cards -Enabling Overdrive through the Catalyst Control Center for single display systems no longer results in GPU clocks running at high levels in non-GPU intensive scenarios Resolved Known Issues for the Windows Vista Operating System -Running fullscreen DirectX 9 applications/games after enabling Aero effects and rebooting no longer causes the system to randomly stop responding -When "World of Warcraft" is launched via TriDef 3D and hardware cursor is enabled, the mouse cursor no longer intermittently flickers and disappears -Hot swapping a HDCP display panel with a non-HDCP display no longer causes the display to turn blank after resuming from sleep/hibernate during Blu-ray disc playback Known issues under the Windows 7 operating system The following section provides a summary of open issues that may be experienced under the Windows 7 operating system in the latest version of AMD Catalyst. These include: -Task switching to desktop and then back into "Far Cry 2" DX10 game may result in performance drop with CrossFire enabled under Multi-GPU configurations -Drag and Drop transcoded H264i content may show de-interlacing lines -Display may intermittently turn blank on launching "Enemy Territory: Quake Wars" or during game play under Multi-GPU configurations on some cards -With CrossFire enabled, flickering may be observed in OpenGL games when refresh rate is set to 100Hz or higher on some cards -Desktop may dim after exiting "Mafia II" game on some cards -Under multi-adapter configuration, various rotated displays in Eyefinity set up might not be retained after reboot -Mouse cursor may intermittently be corrupt/missing in one of the displays under Eyefinity configuration while playing games/samples -Tearing corruption may be visible in specific "StarCraft II" game campaigns at low resolution settings (1024x768) on some cards -Switching from 32-bit to 16-bit colordepth during WMV media playback may cause the video to go blank on some cards -Enabling CrossFire in "Far Cry 2" DirectX 9 may result in low performance and benchmark failing to complete on some cards -"Tom Clancy's Endwar" may stop responding during game cut scenes on some cards -Enabling anti-aliasing in "StarCraft II: Wings of Liberty" may cause outline highlights to be rendered incorrectly on some cards -Green texture corruption may be observed when resolution/video settings are changed in "Metro 2033" game in DirectX 10 and 11 mode on some cards -Rebooting a system with a CRT connected to the MiniDP port may cause all resolutions except 640x480 to go missing -Windows Media Center application may stop responding or system may intermittently fail while playing 1080p video in 2x2 & 4X1 Eyefinity mode Known Issues under the Windows Vista Operating System The following section provides a summary of open issues that may be experienced under the Windows Vista operating system in the latest version of AMD Catalyst. These include: -Corruption might be visible in "Doom 3" and "Quake 4" with ATI Radeon HD 4700 Series -All but the primary display under Eyefinity configuation might become disabled while changing the preferred display at lowest Bezel compensated resolution -Performing bezel compensation on 3x2 Eyefinity configuration may cause the bezel group (resolutions) to go missing Known Issues under All Windows Operating Systems The following section provides a summary of open issues that may be experienced under the Windows operating system in the latest version of AMD Catalyst. These include: -Catalyst Control Center: Enable dialog reposition does not show on proper monitor when system is configured with 4 displays -Switching the preferred display in specific Eyefinity configurations may cause the displays to become disabled Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.