can confirm your BTU is huawei?

anyone at subang usj area already has turbo upgraded speed ? Still patiently waiting for the upgrade in usj area ..

My area USJ - Subang Jaya has received the Turbo upgrade between 1am-5am today.

50mbps -> 500mpbs

No SMS / Email. Found out my profile through Unifi App.

Yes, there is one guy who got it. You just have to be patient.
AC set to 40 or even 80MHz? Your network card is good and is 2x2 but in real world, too many other factors influence the wireless speed. Best is still LAN.
What router? Change cable and see if you can get the turbo speed. Your computer support gigabit?

AC goes in channels of 433 Mb / s and you will only see that in laboratory conditions. 867 means you are taking the maximum possible aggregate of two channels, The 1300 MB / s speeds that routers are claiming is the ceiling speed. It is the aggregate of the maximum possible throughput if all three 433 MB / s channels are being used. It's unlikely you're going to get such perfect results, even if you manage to find a wireless device that lets you use all three channels.

Unfortunately, it is what it is. 1300 is really just the best speed achievable in lab conditions, and you can't expect that value in real life, unfortunately. Is the S9 plus connected to the 5Ghz band? If it is, it is already at the limit.