Windows 10: Wifi connection speed decreased from 120 Mbit/s to 40 Mbit/s after Security Update 4494441.

Discus and support Wifi connection speed decreased from 120 Mbit/s to 40 Mbit/s after Security Update 4494441. in Windows 10 Network and Sharing to solve the problem; I'm using Win 10 Pro and my Internet connection speed (cable) is 120 Mbit/s. I'm using Realtek 8811CU Wireless USB Wifi Adapter. My Wifi connection... Discussion in 'Windows 10 Network and Sharing' started by Quant19, Jun 21, 2019.

  1. Quant19 Win User

    Wifi connection speed decreased from 120 Mbit/s to 40 Mbit/s after Security Update 4494441.


    I'm using Win 10 Pro and my Internet connection speed (cable) is 120 Mbit/s. I'm using Realtek 8811CU Wireless USB Wifi Adapter. My Wifi connection speed was about 120 Mbit/s. But after Security Update KB 4494441, wifi connection speed decreased to 40 Mbit/s. When I uninstall the update, connection speed becomes 120 Mbit/s again. What's the problem?

    :)
     
    Quant19, Jun 21, 2019
    #1

  2. Wifi Transmit Rate 702 Mbit, Receive Rate only 54 Mbit

    With an TP-Link Archer T4U USB3 wireless adapter I get the following on 5Ghz in a Windows 10 Home Powershell.

    netsh wlan show interfaces, results in this:

    There is 1 interface on the system:

    I have a similar Linux setup in the same room and the device log shows most of the receive packets in between 400Mbit and 800 Mbit.

    I know the AP is setup properly because with my laptop's internal Intel WiFi Card the connection is properly, 780 Mbit, both Receive and Transmit.

    I just installed the latest driver from TP-Link, but the driver version drops from 1030.11.503.2016 to 1030.2.731.2015. So I reversed that.

    I forgot to say that the initial seconds/minutes after connecting, both speeds of the TP-Link WiFi are high. Than the receive drops to 54 Mbit and never goes higher.
    Whether it is wifi N / AC / 2.4 GHz or 5GHz, the receive speed drops to 54 Mbit.

    I did a speed test with LANBench, between a Gigabit host as client and the TP-Link Archer T4U as server.

    Results is a receive speed of ~190 Mbit and a received speed of only! 4 MBit.

    I also did a Iperf3 speed test between a linux and windows client, with both a Archer T4U. Result was 90 Mbit.

    EDIT: now I found this thread, that discusses disabling qos, which raised the speed to 156 MBit both ways. And it discusses a new driver that is not found otherwise.
     
    Frank Eising, Jun 21, 2019
    #2
  3. Sarantula Win User
    I can see a network with Bandwidth 1733 Mbit/s

    I have a new modem which have 2 wi-fi network

    • one with network with Bandwidth 130 Mbit/sWhy and
    • othe network with Bandwidth 1733 Mbit/s
    My laptop (samsung NP270E5E) just see the slowly and I can not see a wi-fi network with Bandwidth 1733 Mbit/s
     
    Sarantula, Jun 21, 2019
    #3
  4. Wifi connection speed decreased from 120 Mbit/s to 40 Mbit/s after Security Update 4494441.

    N95 7,2 MBIT/s HSDPA Upgrade?

    Is it possible to make a software update on the HDSPA to 7,2 MBIT/s for the N95?

    Or is that hardware related?

    The Huawei E220 modem is default 3,6 mbit, but you can upgrade the firmware and get 7,2 mbit. That has to be possible for the n95, enable 7,2 through firmware update.

    Raptor
     
    raptor25---01, Jun 21, 2019
    #4
Thema:

Wifi connection speed decreased from 120 Mbit/s to 40 Mbit/s after Security Update 4494441.

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