So Our family all has the XS or XS max... we recently went to one SSID to accommodate a mesh system throughout the house. Everything has been working wonderfully, except our phones... they are USELESS on the home WiFi. The IPAD PRO which has not been updated to 12.1.1 works splendidly. Opens the security cameras instantaneously. We cant even browse the web on our phones without a significant wait. The Cheap ass 65 dollar android tablet our 5 year old has files on our 500 meg connection and nothing else has had a problem but our phones... there was an old article here indicating this was not confined to us back in September has this not been resolved.....????? TIA