Based on my experience, if use all M9 Plus speed will be double.
Ground Floor- M9 Plus 500 Mbps
2nd Floor- M9 Plus 150-250 Mbps
3rd Floor- M9 Plus 50-100 Mbps
Maybe bcoz tri-band.

When internet already 50-100Mbps for 1 floor; enough already for home use. (Let say my wife watch 4k netflix in masterbedroom + I use 4k tv for games on 3rd floor hall+ 2-4 phones/ gadgets)@ all on 3rd floor.
Now I am on 1Gbps (due to multiple upgrade speed); not much time different also download PS5 games on 3rd floor when I had 500Mbps.
If my speed down to 20-30 Mbps (which can happen time to time), then I will feel laggy.. Mean it not enough when we use multiple gadgets

This post has been edited by khusyairi: Jan 22 2025, 01:17 PM

Like I said b4; I dont care whether 500Mbps, 800Mbps or 1GBps (I use the latter bcoz free upgrade); very marginal upgrade in reality.
Maximum usage for netflix for 4k TV just up to 25Mbps only. Download PS5 games just time to time only (the different just few minutes only). If top floor get 100Mbps, I also ok already.
Most of gadgets still on Ground floor. 1Gbps is overkill for home use (even for me- 7 persons/house), I have 6 units 4k TVs.
I have wifi 7 router too (unifi free upgrade- but in reality, additional 24 months contract) but many gadgets still on wifi 6. Even PS5 (which use more data) use wifi 6. If phones (most of it already support wifi 7), 5-10Mbps speed already enough (no need 1Gbps).

If someone ask me; 300Mbps or 500Mbps also enough for typical Malaysian home as long that ping is good. As long that, any room not get below 20-30Mbps, it will be fine..

This is what I want to do b4.
We can put ethernet port each floor (typical 3 storey home), then direct connect to AP router.
Can follow electrical route or TV antenna route (which obviously directly will go to top floor ceiling), just pull LAN cable. No need to hack, just follow existing conduit.

But lastly forgo the idea.
I dont see real benefits although it will boost my Tplink Deco speed a little.
Sekarang pun tgk 4k TV xda lag, CCTV also function like normal, average speed around the house 200Mbps+. If I boost it up, to get 1Gbps, I also get basically same thing (bukan nampak gambar lagi clear pun).
Maybe in future la if there is 8k TVs & PS6 8k games, then I will reconsider this idea.

This post has been edited by khusyairi: Jan 24 2025, 09:29 AM