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
    2020-09-28T07:45:07+00:00

    Thank you for that response. Can I take this has been reported to MS ?

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  2. Anonymous
    2020-09-27T19:16:01+00:00

    I have a Lenovo 920 with Windows 10 Pro, it has been showing this same problem for a long time. I don't know exactly when it started or what updated caused it to happen, as I don't remember experiencing it before when I got this PC almost 3 years ago. But by reading all posts here, I can only think of a MS bug, which is demanding an urgent fix to be released! BTW, I couldn't find any remedy so far by checking the Internet...

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  3. Anonymous
    2020-09-25T13:00:16+00:00

    I ran two lenovo Ideapads , cheap ones, side by side one was showing 245 mbps and the other 45 mbps.. if I reboot the slow one it returns to 240/250 .. and as we all know then slows the longer it is left on. The first one stays constant with no problems. 

    what a mystery ! The slowdown one is the most recent model BTW.

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  4. Anonymous
    2020-09-09T22:04:34+00:00

    Same problem - it's September now, would be great with a fix. Windows 10 on a new Surface Pro. Everything updated. This started relatively recently. Turns the computer into a brick for all practical purposes after an hour or so of work.

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