fa-scroll-view, watchers and poor performance

In fa-scroll-view, as I add more items, the scrolling slows until it becomes unusable or generates a memory error.

Here is the FA code I'm using.

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Changing the layouts between fa-grid-layout or fa-sequential-layout or no layout wrapper did not seem to affect performance either way.

It seems like each item generates 2 watchers as well. So, if I have 40 items, I get 80 watchers, regardless of the content inside of the ng-repeat. Is this expected behavior, or is it my code? Is there something that can be optimized?