Loadmore cards performance


I am playing around with Ionic and building a facebook like newsfeed. I have used collection-repeat to initially generate 10 cards (ionic’s cards showcase css). Then when the user scrolls to the bottom another 10 cards generates. The problem I have noticed is with collection-repeat it is very laggy and choppy. The documentation says to use collection-repeat as it has better performance, but I have found that ng-repeat seems to be better performing for me. Am I missing something?