All thanks to CB-1431

CB-1431 Solves a rare issue where triggering MIDI notes frequently on an instrument assigned via Core MIDI lead to hanging notes.

For the first time since purchase (v 1.1) I am able to use Cubasis to record MIDI from my Fishman Triple Play and from DrumsXD - thanks.
Did take a while though, my post about it was July. :wink:
Unfortunately with 1.7.1 the IAA now doesn’t seem to work. Oh well, there’s always AudioBus.
Now I can record and edit midi, woo hoo.