[Bug 69341] [radeonsi] KDE 4.11 is EXTREMELY slow with Raster QT backend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69341

--- Comment #12 from darkbasic <darkbasic at linuxsystems.it> ---
I noticed something weird: if I start KDE with desktop effects off it is *much*
faster and there is corruption in the title bar. On the contrary if I start KDE
with desktop effects on and *then* I turn them off nothing changes: it keeps
being very slow and there are no signs of corruption in the title bar.

Also I noticed it is much faster when I set resolution to 1920x1200 compared to
2560x1600, at least when starting KDE with desktop effects off.

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