QUOTE(loobighead @ Sep 29 2021, 08:49 PM)
You have sharp eye, the uploaded photo of speed test is captured using iPhone 7. Herby I attached the screenshot of speed test of my iPhone 11 Pro at close range. Basically no difference😂
So I should be contented if my AC 5ghz speed can hit a 500mbps I guess, even though I am expecting higher. I have contacted my unifi installer telling them if they can bring their “lastest device” to do speed test at my router and if they can hit close to 800mbps, I will let thing pass. After hearing this, the technician told me he will be bringing me a new tp link router and test again for me tomorrow, if every thing goes well, I can keep the tp link router for the time being until my M9 mesh Wifi come in. Thanks again for explaining to me and I really appreciate all the advice given. Let’s see how it goes and I will update here again!

haha he knows he's busted
Tbh it was bad pairing for him to give you the FiberHome router in the first place
It would have worked fine on 30/100/300 mbps plans, but pretty bad on your 800mbps plan
Also, when you do get the mesh, disregard TM's instructions of connecting like this
Modem -> router -> mesh
Instead throw the router out a window and connect like so
Modem -> mesh
It should have better peformance