I tried with real VGA Signal output form my laptop: (1024 x 768 @ 60Hz) - I also tried 800x600 but it's worst. We can't distingate the picture.
On the CRT TV, the image moves up to down it is worst.
Now I used the Arduino with library VGAX with the pattern example:
LCD:
CRT:
I have exactly the same results with AD724 and AD725...