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Old 05-03-09, 05:03 PM   #1
spectred
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Join Date: Jun 2008
Posts: 51
Default kwin: XRender "slow" (as usual), OpenGL much slower (new problem)

I don't know exactly when this started to happen and where to search the problem (so I will start here ) but kwin OpenGL rendering is unusable slow. Not only that the effects are stuttering very often, there is also a quite noticeable delay when rendering normal stuff like the maximize and minimize buttons. When I keep moving the mouse over these buttons (so that the images keeps changing) X cpu usage goes up to ~40% (and as mentioned they change with a visible delay).

When using XRender this is much better (no delay and X cpu usage at ~3-5%). With this only fade and resize effects are slow sometimes.

So where might this problem be located?
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