I upgraded to M500 when I moved into my new house last year, we have never reached the speeds that are supposed to be guaranteed. It ranges from 65mbps to 95mbps, but never get over 100mbps. I have tried all other normal resolutions, restarts, factory resets, replacing cables etc.
I have took copies of the router status from the Superhub, in case any body can spot any issues with the downstream or upstream. Any pointers would be helpful?