Mesh Wi-Fi 6 System

I used to have Spectrum (uggg, horrible customer service) & switched to T-Mobile internet & so far love it.  I have Google mesh (older not nest mesh).  I have 4 pucks & connected one to gateway by Ethernet & distributed the rest throughout the house.  I have the gateway behind my tv & live in a house made in the 1920's with lath & plaster walls.  I get great speeds.  I haven't even tried to locate anywhere else because I have such good speed.  The best recorded speeds I have are 493 down & 56 up.  That's with a connection on app that says "very good".  Don't have any idea what I'd get with "excellent" connection..  A whole lot better than I was getting with Spectrum & for a lot less money.  The only problem I've had was speed test dropped in half & called tech support & they rebooted something on their end & I rebooted gateway.  Problem solved.  I will say that I get much better speeds if I reboot gateway weekly.  I'm a pretty heavy internet user, got a whole smart house with a LOT of devices connected & get consistent internet.  Haven't encountered any buffering or stuttering yet.  So far, so good.  Hope it stays that way.