Seanoff.....
I had the exact same problem when I used S-video, after seeing what it was like with composite (pervect qual, same as sky) I ran guided setup again and went back to composite. Also, mixing Svid and composite results in jerky video. When on Svideo I tried using saturation settings as per the older tjv.info site, and this dulled down the over bright saturation but I noticed it was very grainy, and quite poor. Like I said, composite in and out solved all, and no saturation settings had to be altered.
Hope this helps.
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