Jittery Slow-Mo?

Hey, I was hoping someone could help me with this problem I’ve been having. Here’s the deal: I want to do an ultra slow-motion video of shattering glass. So I cell fractured my extruded plane, added my projectile, got everything nice and set up, then set my FPS 1200, and time remapped (Old 100, new 200) for even more slo-mo. However, when I play the animation back in the preview, it’s hopelessly jittery. The dhole scene moves up/down every frame to a new spot, but only on the Z axis. Why is this happening, and can I fix it? I’m using Blender 2.68a on Ubuntu 13.04. Thanks!

I suppose we have to guess what your scene looks like and what settings you are using ?

How about uploading your blend file to http://www.pasteall.org/blend/ and tell us the download link