@leogz OK understand.... But what about the other queries? Would deco use 5Ghz as dedicated backhaul frequency if I free it from the main and guest network? Would it increase the speeds on slaves?...

I have 4 Deco M5 running latest Firmwares. I would like to know how the wireless backhaul of M5 works... I have a 100Mbps Fiber connection and I usually get 105 Mbps on the main deco. The slave decos...