…or funny/weird channel volume issues.
it sounds like it’s limiting
familiar with this?
could it be a cv control in problem?
Are you using USB ?
nope
I sometimes shave bug with Analog four with or without USB I think, this is not so recurent but very uncool… So yes It sometimes happen, I didn’t know why but yes I have see that, a low volume on some tracks (not all if I remember) I will come back to tell you if it happen.
But as each time I only can reboot the analog four, and change kit, maybe project if reboot is not good enough 
Did you resolved the problem ?