Optimize Repeating Groups for Performance Boost

I am currently wrapping my one pager web app into an Appstore App using BDK. The problem i am dealing with right now is the masses of data being loaded onto the page. The app is a social media plattform with a video feed. the user scrolls down the feed whereas more and more data will be pulled onto the page the more the user scrolls (due to the nature of repeating groups i guess). Using the app in browser slows down the navigation as a result while on bdk preview mode on my iphone the app refreshes the entire page after the user scrolled for a while. I hope i can find someone here who can help me with that issue.