@TP-Link_Deco Thank you for the response. I tried creating a guest network and putting just their devices on it and turning of 5GHz so they only accessed 2.4 and various combinations of that set up...

Ok this is a weird one. All of a sudden today September 26 my youngest daughters iPad mini and my oldest daughters iPod, both running ios 9.3.5 (they are older devices and that's where they max out...