First thing is planning. Where's the router location, and how many points needed. This depends on where you need to put Wifi APs, and where you need wired connection eg gaming PCs. If a single floor is large with many walls in-between, you many need 2 Wifi APs for that floor.

Use a good cable of at least CAT6 eg Dintek.

If you got budget, go for Ubiquiti Unifi system. It's better than consumer-grade mesh system, even with wired backhaul. Otherwise, just start with a decent router, entry-level routers as Wifi APs, or basic wired mesh system.

Even Mesh Wifi with fast roaming will have delay, just very low delay (below 1 second), short enough not to disconnect video calls / streaming.

Ubiquiti Unifi APs also support fast roaming.

For my home, I mix & match different models with same SSID. There's a 5-10 seconds delay, but since I take 10-20 seconds to walk up the stairs, by the time I'm at first floor, my phone is already connected to first floor AP. Works well most of the time.

In many cases, I believe having 1 AP for each floor is almost necessary, especially on 5 GHz radio and concrete ceilings.

This post has been edited by taqu: Dec 27 2019, 06:29 PM

IIRC 802.11r works on IOS even on PSK, Windows 10 only via WPA2-Enterprise, Android unsure.

Seeing that TP-Link recommends turning fast roaming off on their Decos, perhaps fast roaming on consumer mesh Wifi is still infancy. The seemingly seamless roaming on today's mesh Wifi probably still traditional roaming.

This post has been edited by taqu: Dec 29 2019, 01:56 PM

Nice to know that.

I assume there is a machine to run Unifi controller app. A Raspberry Pi will do.

I also assume the 3 UAPs are going to be ceiling-mounted.

If you want DPI on your network, you need USG over Mikrotik Hex.

Looks good to me.

Sorry, I mean Ubiquiti Unifi, it needs to run its controller app to centrally manage its access points.

Enterprise Wifi definitely better with full support of 802.11 k/v/r.