don't zoom out too far. scratch cat does not need to know that it is not real. Frame calculations is how much stuff is on screen. FCPS (frame calculations per second) is how many things scratch had to draw in the past second. CFCPS (calculated FCPS) is how many things scratch is meant to draw in a second. EFCPS (expected FCPS) is how many things scratch would draw if the performance never changed.
If you zoom out too far, it just shows the map indefinitely