1gbps

Hi I have got 1gbps from Virgin media and have tested in directly from the superhub 5 and the speed is over 1gbps all the time wired. I have two asus rt 86u on ai mesh and I kind of know what I am doing but since I upgraded to 1gbps, the wireless speed on 802.11ac is maxing out around...

Please could someone try to explain the following phenomena to me, with possible reasons. NB I fully appreciate there is a s.ton of variables at play here, so it wont be a simple single answer, but would like ideas. - When my desktop is connected at 1Gbps wired through to a 1Gbps connected NAS...