When I add "descending: true", I always get back the same result in index 0, which obviously is not what I am trying to get. This is why I put added upper bound of 1000 and fetched the last one. When fetching results, it fetches them in 10 minute intervals, each 10 minute interval is sorted in the order the results are added to the set. With descending: true, the order of the 10 minute intervals is returned in descending order, but the results within each set is still in ascending order.