Collection-repeat performance

Hello, i have a view which is essentially an item list with a background image but collection-repeat scrolling is slow (Crosswalk included)! I tried to change the background-image of each list item to img tag but it is even slower! Are there any tweaks for collection-repeat I should know?
Ng-repeat is an issue for me because i want that view to remain cached and when i have 100+ items it lags and sometimes my app crashes. (memory leak?)

Any help or advice would be appreciated.