beatstep/cubase 7/moog sub phatty

I have a weird problem I’m using my beatstep pro to control my Moog Sub Phatty in Cubase 7 via USB (windows 10)
I randomly get skipped or half notes it feels like the moog dosn’t have enough attack or is too slow to be triggered by the beatstep, other times it will work just fine.
I’m aware that this is just as likely to be a beatstep or Sub Phatty problem, but wondered if anyone had run into anything similar. I have a video showing what it does here, the second and third bars show the sort of drop outs I’m getting.

Happy new year! :slight_smile: