I also use a multiclock as a master-clock (Hapax slaved) and it’s absolutely stable for me. How did you wire it up and where are you sending the metronome to? Almost sounds like a loop!
The metronome is just manually set when I press play.
Ableton sending multiclock source directly for clock sync.
Ableton and multiclock and electrons all read the same bpm.
Meanwhile the hapax is being synced directly
From the multiclock and it’s displaying on the screen way off but audibly keeping sync of all sources even the manually started metronome.
It’s very strange. It’s acting like it’s functions fine but the bpm meter is all over the place.