Hi. 
I've been using 3 x M5 as a mesh for a few years with virgin but recently moved to sky broadband. 
 

I've disabled the sky WiFi and deco is set to WiFi router. 
 

i note it's a simple RJ45 network connection to the sky router from the sky wall access point, but I've been unable to find any settings to remove the sky router completely. Is this possible? 
 

also over the last few weeks (sky has been isp for a few months now) the WiFi network has been playing up with unreliable connections, devices being blocked and general latency issues. 
 

I've optimised and fiddled, but cannot resolve. Not sure if this is sky isp as they of course say it's a deco issue!?
 

is there a way to completely reset deco's to factory settings to explore if it's a configuration thing?

 Reading some threads there's advice to switch to access point mode. Does this need sky WiFi enabling or will deco mimic. I note this also removes functionality so not sure if that's good or bad? 
 

any sky isp users out there who've had to adjust?