This is my Ripple Voltage on the E5 with the KDE-1100 motor and CC EDGE 120HV. It is pretty high initially, but quickly falls below 5% (below 1.25V in 25V 6S system).
This is a closer look at the initial 35 seconds.
This is an even closer look. The Ripple Voltage peaks at about 4.5 seconds, but quickly falls and stays below 5% at about 7 seconds.
It is my understanding that this is OK.