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.
Side note, there is a new v11 function in sources/developer_tools.php called make_dummy_db_row. This generates random data based on the schematics. While it does actually insert into the database, this could easily be modified to instead return the dummy db row without actually inserting it.
This was mainly made for my new stats test