He was having dropouts at 30 feet. And I've got about 8 RPie 3s and some are located over 50 feet away with walls between and never had dropouts. I never have used an antenna with my Rpies. Including my Rpi3 in the Garage. So, that is what makes me suspect his WiFi Network is weak. I monitor mine with PiCorePlayer and I like to see a 'quality rating' over 50.
