Parallax effect glitch at beginning

Hello,
After check all the parallax plug ins I found out that yours is the most flexible and I really like it.
The problem is that the effect has a slight jump at the beginning of the scrolling and that I tried in the 3 main browsers and it’s all the same (please take a look: https://www.dailymotion.com/playlist/x663cr)

Is there anyway that I can fix this or might there be an update soon without this glitch?

Thank you very much and good work to you 🙂