This is a MAJOR problem that has existed since day one and nothing has been done about it. It forces you to use the SP-16 as the master in all situations which is unacceptable. You can't even sync 2x SP-16s together because one has to be configured as slave and in doing so, you lose reliable clock. If I want to use the SP-16 as a slave, I have to manual stop and start my live set every 15 minutes or so to get everything to temporarily sync back up.
SP-16 drifts out of MIDI sync when changing patterns
I have tried to sync with the SP-16 as slave both over USB (from multiple DAWs) and over MIDI DIN (from multiple hardware units, including an MX-1). In all cases, the sync starts to drift after a while, even when the SP-16 displays a solid BPM on the MIDI clock. This has the effect that the beat becomes increasingly out of sync over time. This makes it impossible to record a full, on-the-beat, arrangement from the SP-16 when it is set as a slave.
Note that the drift only happens when the SP-16 changes patterns, either by being in arrangement mode or by the user toggling patterns during playback. If I loop just one pattern it never drifts. This leads me to believe that each pattern change adds a short time shift that over time becomes quite noticeable.
I really hope that you plan to provide a bug fix release that addresses the MIDI issues that make the SP-16 so difficult to use in a production context. Other than that, it has been a solid product in my experience.
SOLVED!...kinda. So I’ve only had the sp16 for a week and I have the same problem. I’m set in my ways with logic and am using the sp16 to supplement my creativity. When I set a loop/cycle in logic every time it jumps back it goes out of sync. Thought it was due to latency for a while. I just went into file>project settings>synchronization>midi and for mode use the 2nd or 3rd one. NOT the one with “/SPP/“ in the middle. This solved the out of sync problem when looping AND changing patterns. Not quite sure why this works but it does. Haven’t tried with any other external gear but at least this is a solution with a DAW. Let me know if this works for you.