Are you praying for 1Gbps?
If 1Gbps is good, but there will be wasting money of changing new router that support 1Gbps.
Then we need additional USB AC Adapter for achieving accurate speed via Wi-Fi.
1Gbps use for download and you have nothing to do with it, you will feel boring about that.
A few member said it's good to have for heavy downloads everyday non-stop.
Streaming 4K video need that.
1Gbps might be very expensive.
Customers will complain why Wi-Fi cannot get accurate ha.  
They have to stick on LAN for full and crazy speed.
 

Wow... how fast are they doing their upgrade. Not like our very unique unifi.

Yes, I am hoping for 1Gbps. I will not need to waste any money for changing a router that can supply me to that speed because the ISP should do that to us. Download stuff and watching video needs that kind of speed so that we can done things in a short period.

Don't you know that TIME Fibre launch awesome plan.
The first maximum is 500Mbps half of 1Gbps.
Too bad that TM won't launch more high speed Internet.

Because they need to rely on VDSL also.

Don't you know that TIME Fibre launch awesome plan.
The first maximum is 500Mbps half of 1Gbps.
Too bad that TM won't launch more high speed Internet.
For 1Gbps suitable for 100 people and above to surf the net.
I feel request for that awesome speed.  

TM got headache to pull those main cable to all type of building to housing area..where and how they gonna lay the cable without other party damage it..
and cost alot..

For sure, number of abusers will increase.

Actually I was using IPv6 to try and just tried, also no issue.

I'm afraid there is wrong setting at my side? 
Could be my PC or router's setting then... 

I don't know how many other sites I will not able to visit, just tried again with this problematic http://www.mi.com/ in my case, still stated "Invalid URL". Then I go to Windows' Control Panel -> Network and Sharing Center -> Ethernet Properties and uncheck Internet Protocol Version 6 (TCP/IPv6), I can open the site immediately. If I check (tick) back this protocol, I can still open the site, but after maybe 10 minutes or so, I got Invalid URL again. 

If that's the case, then just disable IPv6, no big effect for now.

I just did a test at http://ipv6-test.com/, everything seems to be good except those 2 items in Hostname. What should I do to rectify this?

Er, sorry I'm not knowledgeable in this area and I just ran the similar test on mine, my results are exactly the same as yours.

I'm afraid there is wrong setting at my side? 
Could be my PC or router's setting then... 

I don't know how many other sites I will not able to visit, just tried again with this problematic http://www.mi.com/ in my case, still stated "Invalid URL". Then I go to Windows' Control Panel -> Network and Sharing Center -> Ethernet Properties and uncheck Internet Protocol Version 6 (TCP/IPv6), I can open the site immediately. If I check (tick) back this protocol, I can still open the site, but after maybe 10 minutes or so, I got Invalid URL again. 

why ??

Went from 10Mbps to 30Mbps, so I just used the old orange DIR-615 to replace the new one. On a related note, I tried disabling IPv6 on the DIR-850L and things seem a lot faster now on mobile, you might want to try that out first.