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  1. #1
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    WIFI Speed goes up and down

    Hey,

    two days ago I reinstalled Windows 8 on my new SSD.
    However, playing online (e.g. CoD) has been impossible since then due to very excessive lag spikes...

    It did work while the System was running on the HDD though.
    I have allready updated the wifi card driver.

    My PC: Asus G750JX
    My WiFi Card: Broadcom 802.11ac
    Current driver: v6.30.223.99 (should be the latest on windows 8)


    A photo of a speedtest while using the built in wifi card: Click image for larger version. 

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    Other devices are working properly, atm I'm using a wifi usb stick, so it must be the network card.

    I hope you can help me in this case.

    Regards, Henry

  2. #2
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    Right, disabling WMM in the chip konfiguration seems to have done it.

  3. #3
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    Quote Originally Posted by henne2411 View Post
    Right, disabling WMM in the chip konfiguration seems to have done it.
    How do you disable this exactly? I have the same problem as you. Or do you mean you disable it on the router configuration?

  4. #4
    ROG Guru: Platinum Belt Array hmscott PC Specs
    hmscott PC Specs
    Laptop (Model)Asus G750JH-DB71 (legacy)
    MotherboardAsus G750JH Intel HM87
    ProcessorIntel i7-4700HQ XTU Cores 36x/35x/34x/34x Cache 36x -50mV undervolt
    Memory (part number)Hyundai Electronics HMT41GS6AFR8A-PB 1.35v DDR3L-1600MHz
    Graphics Card #1Nvidia 780m Asus GPU Tweak OC 932mhz/6300mhz
    Sound CardRealtek v6.0.1.7469 driver
    MonitorAUO B173HW02 V1 Custom Refresh 85hz
    Storage #1RAID0 2x M.2 SATA Crucial MX200 512GB CT500MX200SSD6
    Storage #2Crucial 512GB 2.5" MX200 CT500MX200SSD1
    Power Supply230w AC Power Adapter 19.5v
    Keyboard Logitech k400 Wireless KB/Trackpad
    Headset Sony MDR-XB500 Wired and Sennheiser RS-220 Wireless TOSLINK
    OS Windows 8.1 + 8 Linux VM's + Windows 10 Technical Preview
    Network RouterAsus RT-AC68U DLINK DIR-655

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    Quote Originally Posted by henne2411 View Post
    Right, disabling WMM in the chip konfiguration seems to have done it.
    hemme2411, disabling WMM can limit 802.11n connection speed to 54mbps. What speed are you connected now, and before disabling WMM?

    PSA: DO NOT Disable WMM
    http://www.dd-wrt.com/phpBB2/viewtopic.php?p=778078

    Don't Mess With WMM!
    http://www.smallnetbuilder.com/wirel...-mess-with-wmm

    Also, 802.11n speeds faster than 54mbps require using WPA-2 + AES Encryption, otherwise the connection is limited to 54mbps.

    Fast Wi-Fi's little secret - you have to turn on WPA2 encryption
    http://www.techworld.com/blogs/war-o...tion--3537813/
    https://www.google.com/search?q=802....x-a&channel=sb

    For the Wifi connection speed problem, it looks like either the router needs a Firmware update, or the laptop Wifi driver needs updating to the latest Windows 8.x version, or both. My Asus RT-68U needed a Firmware update, I had the same Up/Down Wifi speed instability, I downloaded the firmware update directly from Asus - don't count on the built in firmware update feature. After updating the Firmware the WiFi speed and connection were stable.

    You can install the Windows 8.1 version, the installer works on Windows 8.0 too

    The WLAN download area for 8.0 has the newest V6.30.223.228 available.

    Click image for larger version. 

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    G750 support areas - The JM download area has the latest of all the G750, with JS/JZ next, the G750JW/JX/JH are out of date:
    http://support.asus.com/Search.aspx?...750&ps=10&pn=1

    Here are the latest Notebook WLAN drivers
    http://support.asus.com/Download.asp...en&m=WLAN&os=3
    Last edited by hmscott; 08-24-2014 at 12:10 AM.

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