I am not 100% sure if I am right here however I will further investigate.
Being a bit disappointed by some letdowns of the octatrack sequencer I got a squarp pyramid.
When slaving my rytm and a4 to the octatrack patterns did just change when a new pattern started when sending program changes from the octatrack.
With the pyramid it seems to switch immediately. Not sure why this is…
sorry wrong information. sequencers are indicating pattern change but changing at the end of the pattern