Dynamic Repeater BROKEN

My Dynamic Repeater on my website shop is broken. It seems to work if I refresh the page, go direct to the link, or visit the link on mobile.

But most of the time on computer it fails to load and is stuck on a blank page showing nothing…

Anyone have any idea whats going on?

I have also checked the code to ensure there is a Ready Function loaded and there seems to be no issue with this.