We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#5658 - Sorting by popularity doesn't seem to be working
So for example if user A rates 2 stars and B rates 5 stars...
"rating" sorting takes the average... aka. 3.5 in this case.
"popularity" (or compound rating) takes the total... aka. 7 in this case.