I don't have access to a Kemper right now, but I'm trying to understand the display behavior in performance mode. When I go to set the tempo for a specific song, the display of that one soft-knob is basically half-resolution. At first I thought it was a display issue, but then I saw it in a video Kemper posted.
The pic below is a screen grab from one of the Kemper videos on their site, it makes sense why the value for Feedback 2 is 'grayed' a bit. Feedback sync is enaabled and Feedback 1 is the primary control.
Any ideas why the tempo soft-knob would be the same when in performance mode? I'm sure I'm missing something.