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.
This was very worthwhile, a good alternative path into optimisation not tried before. I managed with a few hours work to shave off about 14% memory, which also will help CPU (as it doesn't need to allocate/fill that data now either).
I've attached memory dump details after I've finished for reference.
#2144 - Memory optimisation
I've attached memory dump details after I've finished for reference.