JamKazam/MacPro buffering and releasing audio

[jimlarsen@telus.net]

I am using JamKazam on a MacBook Pro running OS Sierra with a Behringer U-Phoria UM2 audio interface. Intermittently what happens is the outbound audio will stop for a second or 2, and then it seems to dump the buffered audio but it just sounds like garbled data. Seems like it's buffering and releasing for some reason. It happens intermittently every couple of minutes. Not sure if the problem is on the MacBook, JamKazam software or the Behringer interface. 
Any ideas?
 
Thanks