@Alexandre. Thank you for such a detailed and comprehensive reply! It’s difficult to give an answer re: the Netgear router. It’s a Nighthawk D7000, which has received a number of negative reviews....

I wonder if someone could advise a Deco system for my Sister? She lives in an Edwardian house, all brick walls, which is long & thin, plans enclosed. She is the only user in the house, and currently...