Enfold Freelancer Template: Transitions not smooth

Hy there

Depending on what webbrowser our newly created website grasdruck.ch is looked at there seems to be a little malfunction.
On some browsers it works fine and on others not. The pictures on the left or right side seem go down a little and fall down to the intended position again. This happens as the user scrolls down.

Do you have any idea on what the problem for this issue could be and if you’ve seen this before?
It’s kind of hard to explain. If you have follow-up questions regarding the issue let me know.

Looking forward to hear back from you.

Kind regards
Joel Berger