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
    2020-09-29T15:56:30+00:00

    Same problem on a brand new Custom Built PC with all 2020 Components- z490 Motherboard.

    Everything is 100% up-to-date and I'm connected via Ethernet directly to the Router. I normally have speeds around 600-800 mbps via FIos 1gig...then after a couple hours of PC being on this drops to <100.

    Has anyone found a fix for this yet? Getting ridiculous.

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  2. Anonymous
    2020-09-29T06:51:56+00:00

    I take your experience on board but it doesn’t solve the problem for me. I don’t understand how it happens with Firefox or Brave too but once you do a restart the speed is back up again without touching anything and is evident by doing a test on Ookla.. Also if you reset the modem it will do the trick without rebooting the PC... As a rule I don’t use Chrome. The plot thickens !

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  3. 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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  4. Anonymous
    2020-09-28T14:48:16+00:00

    Whatever means you may have or think of to get this fixed, is welcomed! I don't know if MS already knows of this problem, but with so many folks reporting it, like within this community itself, one should expect they are fully aware of it.

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