https://bugs.freedesktop.org/show_bug.cgi?id=58840
--- Comment #8 from almos aaalmosss@gmail.com --- Now I tested things again, and I only see rendering errors with neverball.
I don't know if it is expected, but some games completely slow down to a few fps with msaa enabled (etqw, nexuiz), while others slow down only when lots of geometry is seen (sauerbraten). I still can't install the msaa-capable r600_dri.so, because of the kde-window-manager slowdown bug discussed at bug 55998, so I used the __GL_FSAA_MODE=4 env var for the tests.