I have a UEKS7500U smart tv hard wired to an Asus DSL AC68U router. I can only achieve internet sppeds of betweenn 2 and 4 mb download. The upload speed is around 16mb. I am on BT infinity 2 with a max 78/20 speed. Why is ths? All my other devices HTC One M8 Moto G 4G laptops, desktop can all reach far greater download speeds than this tv. The network cable is only about 20 ft long.