Ubuntu 12.04 x64 much more slower than windows 7
I've got the following computer:
AMD Athlon II x4 620 @ 3.25GHz + AMD 7850 1GB + 8GB DDR3-1333
My problem is, that i've installed L4D2 on windows and linux too on this computer, but on windows is much more smoother.
On windows I use Catalyst 13.01, on Ubuntu (it's Kubuntu, so I use KDE, but I've tried disable desktop effects too, so that does not matter i think) Catalyst 13.08 beta, so the latest. It's generated distribution specific and works correctly.
With same settings (1920x1080, one monitor, enabled or disabled Vsync - it doesn't matter -, noAA, 16xAF, Very High / High / High, enabled multicore - because I can't disable it) the game on linux lags. If I change to lower settings, the filter or shader or anything it lags too on linux.
My questions are: How can I gain the same speed? How can I help (logs, or else), to solve this problem?