MR60 Mesh Router Slow Wifi Testing

"How does the Internet arrive at your place?

The MR60 is a router. This usually gets the Internet from a modem (cable or DSL) or an Optical Network Terminal (ONT) from a fibre network. Maybe that's what you have."

I have a junction box out at the street that leads to a locked box on the side of our house, that has a wire running into the house.  The end of that wire is an ethernet connection.  It is plugged directly into the back of the router.  

"If you are using the speedtest on the Nighthawk app, your phone it may be connected to the router over wifi, but it checks the hardware speed it sees on the Internet.

If all your other tests are done with wifi, then it is down to them the speeds that they get. Are they faster when you use them on different wifi sources away from your network?"

We kind of figred that the Nighthawk app was testing the router itself, which is why it shows over 600 mbps on the speed.  But three different laptops, multiple iPads and iPods, all our phones, and two brand new, high end computer towers, all testing at 100 mbps?  I have not been out of the house near another wifi signal to test that wifi signal since posting this.

A couple questions. 

1. are the satellites hardwired in with a wired backhaul or are they using the wireless backhaul?

2. are those tested speeds over 2.4ghz or 5ghz?

3. What speeds do you get hardwired into the router? 

4. What speeds do you get hardwired into the satellites?

5. what "independent" site are you testing off? 

This is an evolving situation at the house here.  Here's what we've learned so far.

I have an older switch in my household system.  A Netgear JFS524 that is only capable of 100 mbps.  So all my wall outlets are limited.  Possibly can get 200 mbps out of them, but not sure if that's an automatic feature or if we have to enable that, or what.

When we go upstairs and stand next to the main router in the mesh system, we get amazing speed test results.  When we are downstairs by the satellites, we get 100 mpbs.  

When we use my sons laptop and plug the ethernet cable from the router to his computer, blazing speeds of about 900.  When we do the same with the sattelites, 100.

I can see where 2.4 and 5 are an option on the web based Netgear set up screen (the 192 IP address account access page.). Is there a way to disable the 2.4?  I can see on the Nighthawk app where it is telling me what devices are hooked up to 2.4 and 5.  My iPhone 11 Pro, for instance, is showing on the 5, but only getting 100 mbps when downstairs, and over 600 mbps when upstairs, near the main router, not the satellites.

As far as what are we using for testing . . . we have two brand new, top of the line computers my sons just built, so testing from them.  We have downloaded apps, and using any number of web based testing sites that come up from an internet search.  Also, a Playstation 5, which can test the signal it's getting.  It seems like we are getting different results based on where we are standing in the mesh system, and if a wall outlet is being used or not.