I have what I hope is a simple question here. I have a router, the RT-AC68U, running the Merlin firmware, and it is covering my house quite nicely. It sits upstairs in my two-story single family home.

Recently implemented an extremely simple 2 AP setup to extend the wifi into a home office that's disconnected from the house and hence the house Wifi signal is really poor there. It's for my Dad who's ...