Maybe this is too nerdy for this group. I got an OpenWRT ONE router, replaced the old TP-Link one I had. The bad press got to me. The new one is fast, I could not believe how much faster things like downloading files is now.
The worst part was that I had picked out a complicated password with lots of punctuation, and typing that on phones and on-screen keyboards for TVs and game consoles was painful.
Also I pinged Google, and got an IPv6 response for the first time.
When you install a new WiFi router, just make the SSID and password the same as the existing one. No need to update all your devices.
And you can also setup your phone hotspot the same, so if your hardline goes out, you can just light up your hotspot and keep watching Netflix or whatever.