As per many others here, I have issues with wifi cameras randomely dropping off network and will only reconnect with a hard reset

My network consists of 2x Deco X50s
No1 connected as a router/gateway to my Vodaphone provided gigabit connection
No2 hard connected with Cat 6 cable to No1 (this is set as an AP only) to give enhanced wifi coverage
 

Topcony Cameras are new and here

In an attempt to resolve i have taken the following steps:
Camera firmware is up to date

In Deco app - set:
Cameras to only connect to 2.4Ghz network
Set them a reserved IP address each
Set them as priority bandwidth devices at all times
configured the cameras to connect to the same X50 (no 2)
Disabled fast roaming

There are no issues with other devices on the wifi

Any help would be very much appreciated as im about to start destroying my home to hardwire the cameras back to the x50s 
Many Thanks in anticipation