shoutout to the fact that the max filesize is 1mb whilst every other midi format is 12.5mb for some reason :^)

Is there a way to view your current polyphony while playing or making one?

Hmm I'm not sure it's what you are asking for but there with Falcosoft's Midi player

, there is a button called "Visualization (Spectrum & Channels)" on the right. You can use it when playing a midi file to see which channels is being used and with which program.