My AirPlay experience is a lot better. From my Mac I can play music simultaneously in my living room and kitchen very reliably. From my phone I can play to eith

My AirPlay experience is a lot better. From my Mac I can play music simultaneously in my living room and kitchen very reliably. From my phone I can play to either speaker, however the kitchen unit (Airstream S200) stutters when I move the phone into a known poor signal area at the back of the kitchen. There’s about a 2-3 second buffer with current AirPlay. It warns you of this when use use the a GarageBand app. Try enabling IGMP snooping on your router and see if that helps.