IOS app: Set priority of menu icons to be high

In the IOS app, if I move from "Photo" to "Browse" by mistake, then the app starts calculating to populate the images into the boxes for each category. If I try to return to "Photos", it does not respond to my click until after it populates the boxes. This seems to occur only when I first enter the app. After that, it seems to work fine.

This is not a high-priority request - mostly an observation...