I've got an old Apple Airport Extreme -- probably more than 10 years. In the past few years, I notice that my signal drops when I'm in parts of my apartment that used to have fine coverage -- no more than 20 feet away, sometimes with a wall (drywall, not contract) in between. Would this be a problem with the strength of the router? I.e., should I get a new router or an extender? Or a problem with the broadband signal -- should I upgrade my service from 50 mbs to something higher. When I'm near the router I have no problems streaming Netflix or other content.