T-Mobile and mesh on a large property

[Starsfan09]

I am having issues getting this google nest pro 6e with 3 pucks to cover as much area as I was getting with the default T-Mobile gateway. The back of the T-Mobile model sais it is Model FAST 5688W.

I used to keep the T-Mobile modem on the fridge which is pretty centrally located in the main house. It worked great there for the main house but the signal in the pool house is poor. I can get TVs to connect but they barely stream.

This is why I bought the nest system in the first place. The pool house is not real far from the main house, 60' at most. 

Now I have the modem in the back office wired to the first nest puck. I have a second puck on the fridge and the 3rd puck on the back patio. This barely covers the main house. I have them mounted up high hoping to eliminate any furniture that might block the signal. 

This configuration took several tries to get a signal to all the TVs in the house and now it does.cover the main house, just not as well as it did without the nest system.

So my questions are:

Did I just buy the wrong thing for what I want to do?

Did I install it incorrectly?

Can I mix the nest pucks with any outdoor wifi repeaters to help get a better signal to the poolhouse and shed?

[David_K]

Google has good guidance on this here:
Where to place your Wifi devices - Google Nest Help

One thing that's not explicitly stated is you should aim to place your primary Wifi point as close as possible to the centre of your home (it sounds like you're already aware of that). 

What result do you get from a mesh test? Do you get a "good" or better result for all your Wifi points?

Mesh test guide: Improve your network performance - Google Nest Help