Madstation (or somebody else), I guess you can test how the reverbs/delays affect the polyphony? Make several tracks (about 8 ) playing some sounds which need about 32 voices of polyphony. Then load a big unison lead patch with 6 voices per note and start playing multiple (6) notes at the same time. Then enable the reverbs one channel at a time on the other channels and see if you can still play the big unison sound with the same notes. Or something similar...
Or you can just search the polyphony limit first with any sounds when the reverbs are mostly turned off. Then switch the reverbs on and see if the tracks can still play or not.
Btw, Madstation, what is you computer setup and soundcard and which latency and sequencer you use?