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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments
Answer accepted by question author
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.

Was this answer helpful?

50+ people found this answer helpful.
0 comments

102 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Anonymous
    2021-05-17T15:05:14+00:00

    Thanks. I'm not tech savy, but will give this a go.  Hoping for the best!

    Was this answer helpful?

    0 comments
  2. Anonymous
    2021-04-12T00:34:25+00:00

    I've not had this issue lately- don't think I did anything specific to fix it, however.

    Was this answer helpful?

    0 comments
  3. Anonymous
    2021-01-29T20:57:16+00:00

    Thank you for the recent responses to this issue. I have gone for a new SSD with a fresh install of Win 10 pro to try to fix the issue and so far it appears to be working. Fingers crossed.

    David

    Was this answer helpful?

    0 comments
  4. Anonymous
    2021-01-29T08:03:08+00:00

    I solved this by getting a new router, a 2.4 and 5Ghz duplex one.  My old router was a very basic 2.4Ghz model supplied by the ISP.  No problems for about 3 months now.

    Was this answer helpful?

    0 comments