Matriarch - Key tracking issue

Helllo everybody!
I have some problem with KB tracking, as it doesn´t do its job recently.
Best shown while creating a sine wave at full resonance. The moog only tracks half of the keys. It used to work perfectly but now I have that issue. And ideas?

here is a video it:
https://www.youtube.com/watch?v=RWWSHWFwjYw&feature=youtu.be

all the best and thanks,
Philip

Hello!

I have the same problem, filter tracks great only above middle C.
Any help? We can’t really play our bass parts as we would, with this issue. :cry:
OS up to date.
Thank you! :smiley: