Apple Music and HomePods connection

I have in my home , 2 Apple HomePods in different rooms , Apple Express connected to 2 speakers, and a couple of Audio pro wireless speakers. It's annoying when I stream music from Apple Music pn my iMax to these speakers . All except the Apple speakers have a stable connection. Both apple HomePods quite frequently loose connection and get silent while all the others keep playing without any issue . What is wrong with the HomePods . I would guess that the Home app is interfering with the Apple HomePods and consequently disconnect these speakers !?