Any way to improve ATI's performance?

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https://bbs.archlinux.org – Hi,I have an ATI 4350 HD Card on my PC, and I usually play Xonotic with high quality settings, getting around 50 FPS on average on Windows. On Arch, with the Catalyst driver and exactly the same video options for the game, and compiz disabled, I get around 30-40 FPS on average. I wonder if it is really possible to improve the performance of my card to match that of windows for 3D applications.Here's my xorg.conf:Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 Option "BlankTime" "0&q (HowTos)