I've tried around a lot now, but I can't get this game working properly.
(Always used High quality, low doesn't improve anything)
Fullscreen - Use All VRAM - Menu: Lags, Game: 0-1 FPS
Fullscreen - Normal Use VRAM - Menu: minor lag, Game: 10 FPS
Fullscreen - Minimal VRAM - Menu: smooth, Game: 4 FPS
Zoom Mode - 8 FPS
Windowed Mode works smooth (menus, and game), but the game is so small on a 1920x1080 screen, it's not really playable.
In the old Steam forums, I've read about the problem with multiple monitors, but it happens on my notebook too, which only has one apparently. (It is set to "Use PC screen only") http://puu.sh/1ugsk
(Sorry for German, but you can see that there is only one screen.)
After Recettear and Chantelise, I want to play this game so badly. >_>
Can anyone help me please?