Chromebook 13 (ACNXMPRED004)/ 802.11AC / Poor speed performance

The78 · May 2015

I got a new Acer Chromebook and I was wondering the reason why the speed is poor for the Wifi.

The router I use is Asus RT-AC68U.

My internet speed is 1000/100M. If I run Speedtest.net with the chromebook the download speed is around 200 Mbps. I have done the test over and over again. Always basically the same result.

I find the result rather poor compared to my Lenovo (chip Intel AC 7260). With that laptop I get always over 400 Mbps.

By using a cable, the download speed is around 900 Mbps with Lenovo. With the Chromebook I cannot test, since the RJ-45 -slot is missing.

So, the question is… Is there anything I can do to improve the speed with my Chromebook 13? Or is 200 Mbps the best it can do?

I have tested the computers also with another router, but I do not have a 2nd AC-router, so they were tested with 802.11n -router. The speed drops to 100 Mbps.

Here is some info of the test:

Settings of router (Asus RT-AC68U):

http://www.upload.ee/image/4749915/Untitled.png

Speed test with Chromebook:

http://www.speedtest.net/result/4394470494.png

Speed test with Lenovo:

http://www.speedtest.net/result/4394450431.png

Wifi setting from Chromebook:

/device/mlan0

Address: acd1b88f0db7

BgscanMethod: simple

BgscanShortInterval: 30

BgscanSignalThreshold: -50

IPConfigs/0: /ipconfig/mlan0_90_dhcp

Interface: mlan0

LinkMonitorResponseTime: 28

LinkStatistics/0/AverageReceiveSignalDbm: -29

LinkStatistics/1/LastReceiveSignalDbm: -29

LinkStatistics/2/PacketReceiveSuccesses: 9987431

LinkStatistics/3/PacketTrasmitSuccesses: 7997883

LinkStatistics/4/TransmitBitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2

Name: mlan0

NetDetectScanPeriodSeconds: 120

Powered: true

ReceiveByteCount: 5621685360

RoamThreshold: 18

ScanInterval: 60

Scanning: false

SelectedService: /service/0

TransmitByteCount: 5122487442

Type: wifi

WakeOnWiFiFeaturesEnabled: not_supported

WakeToScanPeriodSeconds: 900

And the detailed info of Chrome:

CHROME VERSION		42.0.2311.153
CHROMEOS_AUSERVER		https://tools.google.com/service/update2
CHROMEOS_BOARD_APPID		{2FC0F0CF-1A55-DF3F-73E6-517389444085}
CHROMEOS_CANARY_APPID		{90F229CE-83E2-4FAF-8479-E368A34938B1}
CHROMEOS_DEVSERVER
CHROMEOS_RELEASE_APPID		{2FC0F0CF-1A55-DF3F-73E6-517389444085}
CHROMEOS_RELEASE_BOARD		nyan_big-signed-mpkeys
CHROMEOS_RELEASE_BRANCH_NUMBER		88
CHROMEOS_RELEASE_BUILD_NUMBER		6812
CHROMEOS_RELEASE_BUILD_TYPE		Official Build
CHROMEOS_RELEASE_CHROME_MILESTONE		42
CHROMEOS_RELEASE_DESCRIPTION		6812.88.0 (Official Build) stable-channel nyan_big
CHROMEOS_RELEASE_NAME		Chrome OS
CHROMEOS_RELEASE_PATCH_NUMBER		0
CHROMEOS_RELEASE_TRACK		stable-channel
CHROMEOS_RELEASE_VERSION		6812.88.0
CLIENT_ID		70752293-E53F-403C-87EA-FDF2C585C97C
GOOGLE_RELEASE		6812.88.0
LOGDATE		Sun May 31 11:50:13 EEST 2015