Accordions renders Essential Grids but very small

(Accordions plugin query) I am using Accordions premium plugin to display grids (using Essential Grid by ThemePunch), but the grids appear very very small when the page loads.

The only fix is to go to a different browser tab then return, this makes the grids normal sized again. A browser reload brings the problem back.

Essential grid works everywhere else on my site. How do I fix this?

Thanks