V3 Multiflex 6600M - CW element clipping

On CW, my 6600M with v3 seems to work just like v2, until a second MultiFlex client comes online.  Once the second MultiFlex client is online, the first 6600M client starts clipping random elements in the CW sidetone.  The second Multiflex client doesn’t have to be doing anything for this to happen.  

DETAILS

Using v3.0.19 I’ve found several configurations (details here) where adding a MultiFlex client to my 6600M causes some clipping of CW sidetone elements on the 6600M while operating full break in.  The clipping is random, making it difficult to send CW by paddle without errors. The clipping also surfaces in the sidetone of CWX generated code.

The clipping can be seen in the sidetone waveform I recorded below showing four dits in the letter H.  The third dit is clipped causing a longer space between it, and the previous dit. Note that the clipping does not happen every time letter H is sent, but occurs randomly in the elements of different characters.

The clipping is significantly more noticeable when you are doing the keying as it interrupts the rhythm between what your fingers are sending and what you hear.

More details here on which configurations were tested, along with other notes.  

Is anyone else experiencing this?