@Jens
wouldn't be possible to output PAL at 75Hz instead of 60Hz? Wouldn't be possible to show the odd frames twice? so you show the following frames: 1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 9, 10... perhaps that helps to smooth the movement (or breaks interlaced screens)