So just purchased 3 Deco's and set them up to discover that the Deco furthest from the main Deco is connecting to the main despite the signal being really poor even though there is a Deco in the middl

Hi all. I'm pretty new to this (have alsways just used the modems that my providor have included) but have just had Gigabit fiber installed. To get that to work I borrowed a netgear Nighthawk ac1900 f