Octatrack Midi sync issues

Hi there. Not sure is anyone has come across this before. I’m using my Octatrack slaved to my Mac running Logic X as the master clock. I sometimes get quite bad drift with the midi clock timing, where the Octa will go badly out of time.

I sync other pieces of equipment with no issues. It just seems to be the Octatrack.

Has anyone else experienced this? And did you find a remedy?

Would love to sort this out! It is driving me mad.