im sorry do you have 1gbps internet from your provider? do you know what speed you are paying for?
your ethernet connection and wifi connection could be capable of getting 1gbps. But if you dont have that speed from your provider you will not get it. Its all possible you live far away so its slower or everyone is using internet so its limited a bit, or you are getting throttled because you used a bunch of data or its prime usage time.
what provider and speed are you paying for?