Windows 10 wifi slows down until reboot

Anonymous
2019-08-16T12:11:47+00:00

Hello

i have noticed a problem with my Lenovo Legion laptop

After a while the internet connection completely slows down to the point it is pretty unusable, however a simple reboot fixes he issue until of course it slows again over time.

i've tried lots of things to rectify that i have seen online, but nothing has resolved the issue. i have all the latest window updates and network driver updates as far as i can tell. i've disable my AV and tested and that makes no difference.

Can someone help please?

Cheers

Windows for home | Windows 10 | Internet and connectivity

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Anonymous
2021-01-29T20:57:32+00:00

I found a very possible solution.

Go to settings - > network -> status -> change adapter options

select your wifi adapter.  right click and select "properties"

select the first "configure" button

go to the "advanced" tab.  select "preferred band" and select "prefer 5GHz band"

This will force your wireless adapter to stay on the 5GHz band of your router.

If all your devices intend to use the 5GHz band, disable the 2.4GHz band on the router (although not recommended as many other devices such as IoT uses the wider, slower band)

The BUG:

I appears that windows will constantly hunt for the stronger signal even if it is the slower signal.   For example, if you were moving around your house with your laptop, you may have started on the 5GHz band, but it picks up the 2.4GHz as stronger, and goes on there.  Your network speed instantly drops.  (this will even happen if you are stationary).  

HOWEVER, even if you go back to an area with strong 5GHz coverage, windows does not return to the 5GHz speeds.  For whatever reason, the speed stays limited to the slower output.  That's why if you reboot or turn off and on the adapter, it resets it and you get max throughput again.

Microsoft should really fix this bug.

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  1. Anonymous
    2020-09-28T23:05:16+00:00

    I experienced the problem on a wired ethernet Win 10 desktop so I don't think the wifi is the issue.  

    I've resolved the problem by not using Chrome. Not had any issues since I started using Edge.

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  2. Anonymous
    2020-05-02T21:21:03+00:00

    Same issue

    Ping time is 1..10ms to the WiFi router, then gradually degrades to almost 1000ms!!

    Going into airplane mode and then exiting a few moments later solves as speed and lag are back to normal

    Fixed desktop PC and Huawei based Vodafone AP. Neither move, nor is there extra traffic on the network to affect data speed readings.

    Very frustrating

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  3. Anonymous
    2020-04-11T20:09:01+00:00

    I have the same issue with Intel(R) Wireless-AC 9560 160MHz. The wifi shows good good speeds after a reboot.but it goes down drastically after a day or 2 without restart. Even disabling/enabling or doing a network reset on the wifi adapter works. But this should not happen ideally. Is there some kind of cache or something that gets full and only a reset /restart will empty that cache?(just a thought).

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  4. Anonymous
    2019-09-18T01:11:01+00:00

    I have  Surface Book 2, same issue - internet slows down to about 15% speed until I reboot for full speed. Then gets worse again.  I think this is fairly recent behavior.

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