@MerakiDave , thanks for the response.  I am using MR56 APs.  I have already switched to Bridge Mode and I have opened the UDP and TCP ports that Amazon support suggested.  Prior to those config settings I could not create a multi-room group.  Now I can create a group but when I ask Alexa (or in app) to play a song on a multi-room group it fails.   I also tried pushing all of them to 5GHz but that did not help.  I am currently using traffic steering to optimize 2.4/5     ... View more