If I remember correctly, the 741ND model does NOT support UniFi. You need at least the 841ND.

Why not set it in router? All devices connected through router will automatically get the Google DNS without having to set it manually on each device.

in your router config, in the section where you configure WAN settings where you choose PPPoE and enter your UniFi username/password, you should probably see an optional item asking you to enter DNS server (On some routers such as TP-Link, the option is in an "Advanced" page). Enter it there and all devices connected will use the Google DNS instead of the default DNS assigned by TM.

It's configured on their system that manages your user account, so no visit to your premise is required.

Did you try change the channel width to 20MHz (don't use auto or 40MHz).

From what I understand, many Apple devices such as MBP & iPhone/iPad may not work well with the 40MHz channel width.

UniFi installation & technical support different teams of technicians la.

Not sure how fast the installation guys can come but nowadays technical support team can response rather fast, unlike the early days where you may need to wait one week.

Are you connected via Wi-Fi?

It seems to me it is a wireless interference problem. I have used D-Link & TP-Link before and both also encounter same problem - the ping time can go as high as 1000ms or more, and perhaps even timeout.

I am not sure if the Mi router is compatible with UniFi anyway.

Currently I am using Asus RT-N12HP (HP = high power, with 9dBi 38cm long antennas). So far so good but I only use wireless for smartphones. For laptops & PCs I go for HomePlug instead.

Well, if you stay in a high-rise condo with so many interfering neighbor access points, the performance may not be optimum once you are like 5m away from the access point. That's the limitation of wireless technology anyway.

changing channels do help sometimes, but the problem is I have this neighbor with signals about the same strength as mine has his channel set to auto and occupying 40MHz channel width. So it all depends. I have set my channel to 1, 20MHz width, and if he is on any channel from 6 to 13 then my Wi-FI works better. But the moment he is only channel 1 to 5, my speed will be affected unless I am within 3 metres from the access point.

5GHz higher frequency hence shorter range. I used to use TP-Link WDR4300 but unfortunately as the master room where I spend most of my time at is some 7m away from the point I place the access point, the signal gets weakened. On top of that, my laptop does NOT have 5GHz but my phone has.

So I have resorted to the usage of direct Ethernet cable when possible, e.g. a laptop and a smart TV box that I place at the living room which is close enough to the router, while laptops/desktop computers at the rooms will connect via Ethernet + HomePlug.

Wireless is only used for mobile devices such as smartphones, and also for visitors/guests (when they do pay me a visit) to connect their devices to. For this, the Asus RT-N12HP helps providing stronger signals in the master room compared to the TP-Link WDR4300, due to this router uses 9dBi high power antennas. Basically I get a much stronger & stabler connection, but suffers from slower speed due to interference from the neighbor.

Why not using HomePlug? Wireless is NOT a good solution to begin with. I even use HomePlug now to connect my laptops/desktops which are a distance away from the router due to severe wireless interferences I am getting from neighbors.

Except the BTU (Fiber or VDSL2 modem) which belongs to TM, all the other equipment belongs to you.

How do you connect your laptop/desktop to? Wireless or wired?

Do you manage to get IPv6 to work with this router? I tried set it up but it doesn't.

Can you show your IPv6 configuration page? Perhaps can double check if I missed out anything.

I have exactly the same settings, but doesn't work. Btw, I am on a different firmware as my router is RT-N12HP B1 - the one with 9dBi antennas. Perhaps the firmware does not support. Can only hope future firmware release will support it.

It seems some US sites are slow right now. Some routing issues I supposed?

The AAG cable fault happened near Hong Kong & the typhoon is a problem there - no repair works can be made now.

According to TM, the AAG consortium (of which TM is one of the 19 companies in the consortium) had agreed to begin repair works on October 1 and is expected to be completed by October 6. However, it is subject to weather & sea conditions.

Don't forget that TM UniFi & Maxis Fiber subscribers at high-rise condo/apartments, office buildings & shopping malls are using VDSL2, i.e. copper from the MSAN equipment in the building telecommunications room to the premise, while the fiber from the exchange terminates at the MSAN equipment.

It could be the faulty copper cables at the building that is causing disconnection during rain.

My condo here actually have a choice of TM UniFi as well as Maxis Fiber & P1 Fiber (both using TM's infrastructure as in most other places) and also TIME Fiber.

Despite having 4 choices since 2012, I took up the RM169 for VIP10 offer more than 1 year ago... still prefer to stick with TM - in my case, having HyppTV is good enough for me.