Played for a while after installation - no problem. Next day started new game, lots of graphical bug (giant stretched terrain yield numbers and strange cones). Also the cloth map is not working (just zooms out until graphic is just a mess).
Graphic works fine with my low performance graphic card but then speed is too slow. ATI Radeon 5650 have the problem now (played with this on day one so it worked fine from the beginning, no other changes on the computer).