Dropped from Sessions

[rubato]

I am a new user and have done a couple of sessions.  I keep getting dropped from the session after about 30 minutes.  The screen makes it look like I'm still in the session, but I can't hear and they can't hear me.  Clicking the leave button won't work and I have to close out JamKazam and open it back up to re-enter the session.  I'm running Window 10 Pro on a desktop machine that is less than a year old and have the sleep setting to never.

Thanks for any advice that will solve this problem.