sound cuts out on streaming app for last few months

hello-

 

Sound cuts out on xfinity stream app. Stream still going- I see them talking but I can't hear them. It comes back in about 5 seconds. If I stop and then start the stream the sound comes back (don't even have to quit the app). I am on iphone SE ios 13. this started with the "upgrade" to ios 13. Happens ALL the time.