MUST RE RAN IN TURBO MODE It is successful when each note is at the same time (so it should just sound like chords, not a ton of notes) Do that, introduce some lag by ("See Inside"), and switching which cat is selected. It is enough to get things in sync. Sometimes just clicking "see inside" is enough
If you are confused, listen to this: https://www.youtube.com/watch?v=eArKU_1NIwI