Higurashi Daybreak

I don't get this game running properly.
Only the top-left half of the 2D pictures in the game appear and everything is blinking irregulary. When I get into battle the 3D surroundings are okay, but the 2D graphics are broken in the way described above.
I've tried installing the newest graphic card driver, I've upgraded to DirectX 9.0c, dxdiag says no problems have been found and I've set the system standard language to Japanese.

I'm thankful for any help.

Perhaps you have some other software interfering in the background. Try to kill all useless processes when you play the game