Sound Cuts Out Intermittently

I have 2 pairs of HomePod Minis. The first pair is connected to the Apple TV device in my bedroom and the other pair is connected to the device in my living room. I've noticed that the sound cuts in and out but only when I'm watching YouTube videos on either of the tvs. One or both speakers will stop playing the sound at various times then correct themselves. However, it never happens when I'm watching other streaming apps or listening to music.  I've tried restarting the speakers and also unpairing them but nothing has worked. Has anyone else had this problem?