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
    2020-08-12T17:11:53+00:00

    this continues to happen to me with a brand new Lenovo x1 with the latest drivers!

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  2. Anonymous
    2020-08-12T17:05:18+00:00

    Don't know if your PC is old, but mine is and I think the driver is messed up and no longer supported by anyone.  I ended up buying a USB wifi adapter from Amazon and it seems to have fixed things for me.  They're pretty cheap.

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  3. Anonymous
    2020-08-12T16:49:16+00:00

    yes, getting the same problem with an HP Elitebook 820 running win10 2004 

    it works for about 5 - 10 minutes after reboot at a wireless network speed of around 30Mbps and then drops down to the Kbps range.

    MacBook Pro on the next desk using the same 5GHz network is accessing wifi at 80 - 100Mbps.

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  4. Anonymous
    2020-07-04T09:49:57+00:00

    Same story here, Microsoft Surface Pro 2017, no Lenovo to blame.

    Clearly a Windows bug.

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