Thanks for the interest in my problem. To answer your questions, I’ve looked at the meters when this happens and they are representative of what I’m hearing. So I’ll hold down a note, it drops out (FYI other notes keep playing in my arrangement) I look at the meter and the meter has dropped as well.
When this happens upon hitting retrospective record I’ve then hit show all controllers and everything looks normal. No Sustain pedal weirdness or all notes off or weird volume jumps.
I can definitely try the blank project idea as you suggested and see if that works.
As for my setup, I’m running a 2013 Mac Pro 10.14.6, I use Vienna Ensemble Pro to host all of my VST’s which are 95% Kontakt instruments and then a few Real Guitar instruments. I’ve been running this template for years without these problems. I did recently switch on the VEP side to Kontakt 6 from Kontakt 5, however I ran that with CB10 for several weeks without issue. My midi controller is a launch control Xl and a M-Audio Keystation88, I’ve also had these for a long time.
Now that I think of it, I did recently add a MOTU microlite for Midi out, but there is no MIDI inputs plugged in. I could deactivate those inputs in the Cubase setup window and see if that helps as that’s an old piece of gear, maybe it has some issues.’
Oh and I’m using a MOTU 1248 which I’ve had for a long time as well.