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  • #21
    Originally posted by entropy View Post
    Do you run a compositor?
    From my experience 2d performance significantly drops for Catalyst + Compositor.
    Yeah, KWin. I just noticed that after suspending compositing scrolling is indeed smoother. Not sure if it's still as smooth as Gallium, but these subjective things are hard to judge.

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    • #22
      Qt4 using the raster graphicssystem (default in 4.8) or native (default <4.8)?

      The raster system is software rendering, which is expecially faster on nvidia, since the using native and relying on 2D acceleration was hopelessly slow.

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      • #23
        Originally posted by molecule-eye View Post
        Yeah, KWin. I just noticed that after suspending compositing scrolling is indeed smoother. Not sure if it's still as smooth as Gallium, but these subjective things are hard to judge.
        I count four people here on forums which use kwin and have some issues with fglrx, so i think it is best to investigate what is main "slowness" culprit with using kwin - is it composite or not, etc. .

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