Were your titles created in Premiere Elements titler workspace or outside the program?
Are they moving or stationary titles?
Also, is it the titles themselves that shudder or the background? And, if so, what is the source of your background?
I have created the titles in elements and its a crawling title and thats whats juddering. The background is just a avi file.
Can you post a sample to YouTube or Vimeo or Muvipix so we can see it?
only when its burnt on to dvd
Two considerations for the best quality and greatest playability on a set-top player, are:
1.) Use the highest quality media possible. I strongly recommend Verbatim, or Taiyo Yuden blank media
2.) Burn at the slowest possible speed. Since PrE uses an average of your media's speed and your burner's maximum speed, I would suggest the slowest media speed that you can buy. Many use ImgBurn to do the physical burning, as it does all you to adjust the speed of the burn. I'd get as close to 2x, as you can.