Probably spectre patch issue?

Very simple to check.

Open Window task manager, go to CPU section, change graph to One Graph Per CPU.

Run your iperf again (PC <--LAN--> Router <--LAN--> Laptop)

Take a good luck on the windows task manager CPU utilization during Iperf test.

Strange indeed.
You should be able to get 800Mbps on wired for TP Link C1200 with NAT Boost enabled.

Let see Doraku Iperf result later.....

Normally after disabling QOS, and enabling NAT Boost back, a reboot is required for the router.

Since you already bought C2300, enjoy it.

Doraku case.....I suspect it to be bottleneck caused by spectre and meltdown patches.

Turbo 500Mbps, yet only get 320Mbps top

IPv4 and IPv6 results indicated NAT Boost is working just fine.

Just a quick test:

Open windows task manager and go to CPU section, change the graph to 'One Graph Per CPU'.
Then please run TM speedtest http://speedtest.tm.com.my/ via LAN cable and monitor the CPU usage.

Just wanna check if you have one cpu core being maxed during data transfer.......

Get ASUS RT-AC66U, make sure it is B1 revision.
Then flash it with https://asuswrt.lostrealm.ca/about

~.~

Sigh....either cables problem, BTU port misconfigured, NAT Acceleration off and 'Spectre + Meltdown' problem.

Pick one.

Technically, you have Spectre + Meltdown problem where one of the CPU core is maxed as shown in your screenshot. Your CPU probably has high clock or powerful enough to offset the penalty.....or is it due to Turbo Boos skewing the result?.

Laptop has funny 'Turbo Boost' management.
For instance, i5-5200U has base clock of 2.20GHz and turbo clock of 2.7GHZ. If it is clocked at 2.2ghz due to temp, LAN transfer is limited to 370Mbps. If it is suddenly turbo boos at 2.7ghz, LAN transfer will increased to 500Mbps.

Anyway, have you try one of fellow forummer about clearing cookie and cache plus incognito mode to speedtest?

~.~
How about connecting laptop to C1200 WAN port and PC to C1200 LAN port Iperf result?
Impossible for C1200 WAN to LAN routing performance to be 300 - 400 Mbps only.

Exactly, if you asked for billing correction / rebate, TM tends to "reflect the correct amount" after 3 months. In the mean time, "please pay the extra bill to avoid disconnection, it will be refunded into your TM account after 3 months" Farkkkkk!!!

No idea, but billing tends to fall under KPDNKK
Internet Service quality = SKMM

I believe the real situation is like this:

Before the turbo, he wanted a good router, but StuartLee2015 is a stingy person. He knew Asus brand is good, but he was too stingy to spend money. Thus he asked for the cheapest asus router available which is RT-N12HP B1.

Back to few days ago when his account was turbo-ed.
He claimed he will purchase expensive router to max out his 500Mbps turbo such as DIR 878 and ASUS USB-AC53 adapter. (Everyone know StuartLee2015 is bullshitting by now)
When he learnt that his cable might be the issue, he went and bought the cheapest possible long cable without checking it for CAT5e certification. Not only that, he said he wanna buy DWA182 instead of USB-AC53.
He probably has only TWO real cat5e cables which was bundled with RGX4400 and ONU.

When the TM technician came after his begging, TM probably brought along DIR842 and normal cat5e (bundled with DIR842 instead of that cat6 bullshit) and demonstrated it is router problem as expected.
TM probably said to StuartLee2015 he could refresh his unifi contract duration and that DIR842 will be his.
Being the world most stingy person, StuartLee2015 immediately accepted the condition.

Indeed, next thing we know, he wanna ask how to remove that pesky @unifi suffix from his wifi SSID.

I find it unlikely since you already refreshed your contract and accepted that DIR842.

Anyway, DIR842 only has 2x2:2 configuration, so over 5Ghz with 2x2:2 wifi adapter, best case wifi speedtest will be 400Mbps without interference from neighbouring 5ghz hotspot.
Don't complain about not reaching 500Mbps again with wifi.

Ah, the webkit/webview rendering engine something has cpu limitation when speedtest via web browser. Best to use speedtest apps on android.


~.~ Finally, he admitted it.....
Note: you will be charged for on site visit.
edit: Still nobody gonna trust you will purchase new router.


Let see how will he respond to TM after his bill has additional RM53.......

This post has been edited by JohnLai: Sep 16 2018, 03:02 PM

Well, that is 54% of 300Mbps 802.11N 2x2:2. Close to the effect 60% theoretical limit.

ac : single stream 80Mhz channel width link speed = 433Mbps
n : single stream 40Mhz channel width link speed = 150 Mbps

60% of overall 'link speed'. It doesn't matter how many streams.........

802.11AC actually has more 'inefficiency' than 802.11N........somewhere around 55% compared to 802.11N

520 divided by 866 = 0.60046189376443418013856812933025 ----> 60%

Hmm...... no maxed out cpu usage on one core. Guess spectre + meltdown issue isn't applicable for you.

I ran out of solution on what is wrong with your turbo.

Try to clear browser cache and cookies. Someone mentioned he/she got proper speed on speedtest website after clearing those.

KUALA LUMPUR (Bernama): Telecommunications companies have until Sept 30 to submit the proposals for the new broadband packages to the Malaysian Communications and Multimedia Commission (MCMC), said Communications and Multimedia Minister Gobind Singh Deo.

"I hope that after the proposals are submitted to the MCMC, we can implement them and then the broadband prices will drop and the speed will increase by the end of this year," he said in a post on his official Twitter account on Sunday (Sept 16).

Gobind Singh said the proposals were initially supposed to be submitted before Aug 31, but there were requests for it to be extended for two years.

"We reject it. The extension is only until Sept 30. This is because the SST (Sales and Service Tax) was implemented on Sept 1 and there was a need to resolve certain issues such as prepaid reload cards first. No more extension after this," he said.

Gobind Singh said he would hold a meeting with all telecommunications companies after Sept 30. - Bernama


Good, if only Mr Gobind can pressure TM to turbo existing account as soon as possible......