
eero
Pro 6 Series
Easy, reliable, smart home ready; but paid features.
Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
I did have similar issues with my first Orbi which was an RBK50 it was fine for 1-2 days when dropped down to 1/4 of my speed. Rebooted it was fine again. Always happened. Tried a different router and that was fine for a wee but again the Orbi dropped to 1/4 speeds after 2 days when I changed back. (On all devices including wired) I read that someone was having the same issues on another brand mesh system and he replaced the LAN cable from the Fibre ONT to router and he was fine. That’s what I did and I never had a trouble with that set again. Went fine for another couple years until I upgraded to the 860 series haven’t had issues with this one yet
My parents have same kind of house, with their Xfinity broadband in the 3rd floor TV room. I ran Cat6 across the back down to the 1st floor for back haul and an Orbi WiFi6 mesh router now gives great signal house-wide (yard too!)
I went from an old Orbi RB system to the 770 and have loved it! Sorry to hear so many haven’t. But so far it’s been great for me all around.
I hated the WiFi 6 Orbi system I bought. It was lacking so many fairly basic features, such as QoS, firmware updates breaking basic functionality, and a very lackluster app-focused experience. I replaced it with an ASUS WiFi 7 system comprised of a RoG router with two Zen nodes and it’s been a lot more solid with far more configuration options than I’ve ever seen on a residential router. Maybe the Orbi WiFi 7 line has solved their earlier issues, but I’ll never buy one again based on my prior experience.
I’ve used before netgear Orbi mesh WiFi 6 router with two satellites. Worked well. Expensive but I guess was worth. Still use it now in the apartment but with one satellite in the bedroom only just in case
You could get a 3 pack mesh network bundle like the Netgear Orbi system with a dedicated wireless back haul. You would plug the main unit in behind your ISP router and then place the satellite units around your living space. Just make sure that you place one of the satellite units mid way between your deadzone and the main unit so it can throw the signal the rest of the way for the last unit.

eero
Pro 6 Series
Easy, reliable, smart home ready; but paid features.

TP-Link
Deco XE75 Pro
Great coverage, easy; but unreliable Ethernet, poor app.

eero
eero Max 7
Incredibly fast, reliable; but very expensive, limited control.

eero
eero Pro 7
Fast, reliable; but paid features, needs internet to function.

eero
eero 7
Easy, reliable coverage; but no 6GHz, paid features.