I do notice stutter and frames skipping on my panasonic Ae8000U projector. And the frame creation does not help either
I did post a response on the Mede8er forum and I will repeat it here.
Please read this article by Evan Powell of ProjectorCentral.comhttp://www.projectorcentral.com/judder_24p.htm
He is 100% correct and really knows what he is talking about.
Judder is a low fps issue and not a issue created by X3. Judder is present on all low fps material when you have fast camera pans using 23.976 or 24hz. If you are using a projector then you will be more sensitive to this judder as you are projecting the image at least twice the size of a large screen TV.
This judder is present on the source BD and you have a few solutions to reduce it
1) Try the Cinema Smooth setting on your projector
2) Try setting the X3 to 1080 60p
So to make things clear - X3 is not causing this 'stuttering' we call it judder as it a product of low fps. We also have test units of High End brand Media Players that have Sigma Chips and the judder effect is exactly the same as X3.