I output the MIDI tempo via Bandhelper. That works so far.
Only the tempo is doubled on the receiving device (Montage M).
Am I doing something wrong, or do I need to adjust something in Bandhelper so that the tempo is reproduced 1:1?
Do you have another device that is also sending MIDI beat clock, or that is using a MIDI Thru function to repeat the beat clock messages it's receiving from BandHelper?
Otherwise, please submit a help ticket to troubleshoot:
https://helpdesk.arlomedia.com/arlomedia