@JK130 The cabled backhaul up to the EE Smart wireless device, you have already said that you have a switch in the mix, so unless you get it all out off the loop there is not much more can be done or said, the fact you pulled it out is off no significance in the slightest, something is clamping the operation and reducing the speed that the Hub thinks, it's folding back in operation and recovering by the looks of it removing the Ethernet Connection.
Sugar happens, i just had to reset one of my Asus AP's yesterday because the wired backhaul decided it wanted to be at the 100Mb/s, confirmed by looking at the main Router port, was it the Hub or the AP who knows, the Ethernet was disconnected, the hub recovered, the AP thru a tissy fit because the cable got pulled thought sugar am i wired/wireless Ai mode off operation reset itself as it would do, cable was plugged out few seconds back in but had to wait on the AP anyway, guess what been working that way for god knows how long and back at the 1Gb/s backhaul speed.... Chicken and the Egg which one comes first!
