I tried different lenghts including 1/4. What is the length describing? The lenght of the entire sequence fitting into 1 1/4 note of the tempo? I know that would be way too fast – just looking for an explanation. The tap light on the pedal is flashing in time with the midi clock, but the sequence is not in time.
The Length is for the beat not the entire sequence. So the sequence length is LENGTH * 16.