Originally Posted by Nebulus
You can solve slow 2D Font Redering under KDE, by disable the antialiased Fonts completly (in KDE Control Center).
And instead install a patched freetype-2.2.1, with patented font Rendering enabled. (It is disabled by default) You must recompile freetype-2.2.1 from Source.
I've done it both ways, and I personally think the fonts look better without
the patented rendering. Instead I use an xft patch that provides much better (like cleartype) rendering.
Regardless of the rendering in freetype subpixel looks far superior.