Riddle me this(QoS on usb wifi adapter+media playback=weird issue)

Discussion in 'Windows 10' started by whitestar_999, Nov 18, 2020.

  1. whitestar_999

    whitestar_999 MDL Addicted

    Dec 9, 2011
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    I am having a very strange issue on win 10 LTSC 2019 updated to latest version on my recently assembled desktop. I have an AC wifi usb adapter(Realtek 1200mbps) which has a setting in Device Manager--Advanced titled "QoS". Now if QoS is set to auto or enabled then what happens is that as long as I launch a media player & play any video file, the upload speed drops down to 200-300KB/s from 4-5MB/s & will remain there until media player is closed. Now if I disable QoS then this issue goes away but another one takes its place which is very high latency in local network(even pinging the router gives avg 800-900ms pings) & almost unbrowsable local network speed of 40-50KB/s while trying to access shared folders from another pc in the local network.

    I have tried all other things like enabling/disabling windows firewall/defender(only using this with no AV), giving preference to IPv4 over IPv6 etc & it all comes down to QoS setting in my usb wifi adapter(my other one does not have this QoS setting). What I am puzzled about is what possible relation can QoS on an usb wifi adapter have with local media playback(I have not enabled media streaming option in win 10). I seed a lot of torrents & really don't want to choose between either watching videos with negligible upload speeds in background or good upload speed with practically no local network connectivity.
     
  2. pm67310

    pm67310 MDL Senior Member

    Sep 6, 2011
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    You need to limit torrent seed

    To optimize network speed ( close all software temporary torrent etc.. )

    Launch speedtest

    If speed test report 100mb

    Report 95 mb in tcp optimizer

    Choose apply for all network adapter and optimize for performance reboot computer

    You can use after reboot your computer normally
     
  3. whitestar_999

    whitestar_999 MDL Addicted

    Dec 9, 2011
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    I try to avoid the so called "optimization tools" & this does not address the basic query, what does QoS on wifi adapter has to do with local media playback.
    @Enthousiast @BAU
     
  4. whitestar_999

    whitestar_999 MDL Addicted

    Dec 9, 2011
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    Can somebody please tag some networking experts here?
     
  5. pm67310

    pm67310 MDL Senior Member

    Sep 6, 2011
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    She was a good tool not bloatware...

    Qos reduce latency for real time content like streaming or online video game
     
  6. windsman

    windsman MDL Expert

    Jan 11, 2010
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    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  7. whitestar_999

    whitestar_999 MDL Addicted

    Dec 9, 2011
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    But I am not streaming or gaming online. I am just opening media player to play video files in my hdd & torrent upload speed drops down from 4-5MB/s to 200-300KB/s.
     
  8. pm67310

    pm67310 MDL Senior Member

    Sep 6, 2011
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    I have the same problem with a wifi adapter this weekend, just replace it. realtek AC8811 fully updated disconnect every time or loose netwrok or speed reduce simply change this wireless card resolved my issue
     
  9. whitestar_999

    whitestar_999 MDL Addicted

    Dec 9, 2011
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    That's interesting, my wifi adapter is Realtek 8812AU & currently I am using the latest driver version available on realtek site which was released in 2017 & it seems to be working better than the latest driver version available on windows update released in 2018. With this older driver version my speed don't drop as much which I can accept.