Internet connection issues when using Apple TV.
I have a very bizarre problem and don't even know where to start. Over the last two weeks or so, everytime I use my Apple TV Gen 3, the internet connection to both of our two iPhone 6/6 plus's starts having issues but our MacBooks (2015) are fine. When the apple TV isn't running, I am getting about 31 mbps download speed through the SpeedTest.net app on the iPhones but once we turn it on the connection seems to cycle on and off. When I open up airport utility it shows a green dot next to the airport but a yellow dot next to the internet globe. The yellow dot cycles to green periodically as if its automatically resetting or something. Using Airport Utility on the Macbook during the same period, it shows green all around with no issues on the same airport express. When I test the speed from the speediest.net with the apple TV running it has about 49 mbps download speed. The actually wifi connection never drops just the internet. We also have a gen 4 Apple TV and when its running (gen 3 turned off) we have no issues. I have attempted to reset both the cable modem and the airport router.
Mac Pro (Late 2013), OS X El Capitan (10.11.3), 3.5 GHz 6-Core; 16 GB Ram; Dual D500