I’m not sure how well I am going to explain this, but here goes!
I have had success with the steady movie filter, but only if I apply it to a clip rather that a whole video.
For example, if you shoot 10 15 second clips and then import the whole footage onto the timeline this will cause glitches if you apply the filter to the whole sequence. The glitches will occur when two of the 15 second clips join. After a while, they should settle down.
If however you apply the filter to each of the 15 second clips in turn the results should be more predicable.
HTH!
Dave