On Thu, Sep 19, 2013 at 1:45 PM, Mag. Dr. Nikolaus Klepp <office@...> wrote: >> Hmm, I've just read of a little bit opposite. On Xorg Qt4 uses XRender >> for composing by default. This is done on server side and this engine >> is very slow. If to switch Qt4 to raster engine, then performance goes >> to normal. Here is an article: >> >> "How to drastically boost up your KDE 4 performance by using the Qt >> raster rendering engine" >> >> http://tinyurl.com/644b7a5 > > To put it simple: it does not work. Well, it worked at least until the April 13, 2011. Maybe things have changed since then.