Hi kianlun,

May I know what is the WiFi card/adapter that you are using? Yo can try updating its drivers. And is all the WiFi device also having the same download speed?

You can use phone to do speedtest also.

You can also try updating the RT-N12 D1 firmware to the latest Version 3.0.0.4.378.6975.

In this firmware, you will need to do a factory reset after the firmware update.

http://www.asus.com/Networking/RTN12_D1/HelpDesk_Download/

Thank you.

Hi kianlun,

I have tested the RT-N12 D1 at my home which is using 30MB UNIFI package also. And below image is the result.

I use the RT-N12 D1 as a second router, so the WAN IP it get will be from the main router.

Image A is the speedtest in living room which is line of sight between the router and my notebook.

Image B is the speedtest in my room, the signal is 3 bar only.

Image C is the speedtest in my room also but the router is RT-AC68U which provide better coverage area and data rate.

In line of sight and the signal are good, you should be able to get 30MB with the RT-N12 D1.

Thank you

Added

All test are based on same server Kuala Lumpur-Mykris