but also takut to straight buy one hAP AC because it costs rm550+.. what if the coverage also not good..then defeat the purpose also.. any shop that can let u try first.. lol

My experience, with Asus rt-ac86u, tplink- c7(bought from usa), tplinkc5(tm provided) and numerous other modems and wireless router... I can tell you this much, there is no one router that can successfully penetrate 2 brick walls and still maintain good signal for 5ghz, for 2.4ghz, you might get 50mbps if your lucky.

Thats it.

If you are serious about getting >500mbps on every floor and 90% of the area including toilets, where you need to watch Yanxi while pooping.... Please get a mikrotik router, mikrotik poe switch plus multiple mikrotik CAP AC(access point for each room ) plus spend money or DIY cat 6 or greater cable.
I am now working hard saving money so I can get the RB4011(probably release in 1 year, plus CAP AC(or AC2) in couple of years. Damage will be close to rm2500(roughly calculated), I already got 70% of the cabling done partially DIY, partially done by my electrician.
For you, I recommend at least 1 Access point per floor.... concrete floor with the iron rebars are not exactly very penetrable for WIFI signal much less for 5ghz signal which is difinately needed.

Another thing, you need to upgrade your phone, notebook, computer to the latest that enables MIMO, gigabit connection ect. 1st generation client phone wireless AC is very shitty.... will keep disconnecting one. Dont bother connected wirelss AC with those early AC devices. even my Huawei P9, the wireless AC is the shittiest thing ever.

I got a recent xiaomi that did better that it.
That said. I am quite spoiled with the asus rt-ac86u. I like the AI protection, the multiple VPN connection that I am running, dns filtering, multiple guest networks. I may never upgrade to the mikrotik(but it is a dream). I think single device wise, it is good, I can even connect wirelss AC to xiaomi tv box from upstairs where the router is to down stairs where the tv box is. But dont expect all device to connect that well, thats why I want to get multiple Access point, and manage it centrally and disconnected low signal and so the client can reconnect to a stronger signal.

I think my pc are spectre and meltdown free, or at least that's what InSpectre scanner showed me. My desktop is i5-4690k and I also ran speedtest on my i7-8750H laptop also yield the same speed. The test was ran using cat 6 straight from Gr3 (and cat6 from modem to Gr3)

DHCP Client showed as bound if I ticked just request prefix but went to endless searching when I select address and prefix.

Also, ND shows bridge1 as interface while in KLSeet guide interface in ND showed as ether2-master-local. (I use the same naming as the guide so wonder where to change the interface in ND).

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Noted, thanks.

no such thing.

fasttrack will allow the device to achieve higher throughput, as the established and related packet can bypass the firewall rules. check the below video, it provide a good explanation about this feature.

Set ppoe dialer on different port that working

Considered lightning strike you can't repair those burn LAN port RIP bro