Strange behaviour on load more

Hello,

First of all, very nice plugin!

Unfortunately we have run into an issue and not sure where to look to resolve this. We use your plugin to load and filter certain items on a website but as soon as you scroll down there seems to be a strange behaviour with loading of the posts, it looks like there is an effect that loads the posts but it does it strangely. The posts seem to shift left and right before being fully loaded.

This also happens when pressing F12 to look at the console, in which I could not find any errors.

Can you please advice on what to do and how to turn this off?

Thank you

The page I need help with: [log in to see the link]