Zoom (or Team) slows down internet speed by 30 times | Community
Skip to main content
G
Newcomer
Guiping
Newcomer
June 6, 2023
Solved

Zoom (or Team) slows down internet speed by 30 times

  • June 6, 2023
  • 17 replies
  • 7 views

Oct. 11, 2023

Seeing more responses on the issue, I updated my original message to make it more useful.

 

Problem:

On my Windows 11 laptop (Lenovo ThinkPad, E495, ethernet wired connection), when I start Zoom (even without signing in, same with Microsoft Team), the internet speed test shows a 30-times drop, from 450 Mbps to ~10 Mbps.

 

Temporary remedy: 

After your Zoom session, QUIT Zoom (or Team) COMPLETELY so your internet speed is back to normal. You make sure this by clicking the "Show hidden icons" arrow at the bottom-right of your screen to see all the applications running and exit Zoom if it is still there.

 

Attempted fix. It worked briefly for an earlier version of Zoom, but does not work anymore (after Zoom version evolution) as of Oct. 11, 2023 :

   1.) Search for the "Control Panel" and open this up.

   2.) In the window that comes up, click on the "Network and Internet" link

   3.) In there, there will be a link that says "Internet Options", click on that to get another pop-up window

   4.) In that pop-up window, towards the top, look for the tab that says "Advanced" and click on that

   5.) Scroll to the bottom of that window, look for where it lists "Use TLS", check "Use TLS 1.3", and uncheck "Use TLS 1.2". 

 

Also tried Google Meet. Although the network speed test shows no issue, all applications become slow and lagging. It is worse than Zoom -- even the slowdown-plagued version. 

 

      Best answer by gweeks

      Like many on this thread, I performed this "fix" (among many others) to address this issue. It worked initially but the problem returned. However, I found one more thing that's worth trying for those with a Lenovo that seems to have worked (fingers crossed). I have a Thinkpad X1 Carbon Gen 8. 

      • Open the Lenovo Vantage app
      • Under Device Settings, select "Performance Boost" (Zoom was listed as one of the "Apps to boost")
      • Turn off Performance Boost

      I hope this helps some folks. This has been the most frustrating computer issue I've faced.

      17 replies

      Show previous replies
      R
      Newcomer
      rjs243
      Newcomer
      October 24, 2023

      After more wasted hours than I want to admit, I found this: https://support.lenovo.com/us/en/solutions/ht511981-intel-cpu-may-throttle-to-about-04ghz-using-video-conference-applications-thinkpad. Lenovo knows about the problem and hasn't done anything about it for months. I have an Intel 10th Gen i7 core processor on my ThinkPad X1Carbon Gen 8. Exact same problem with both Teams and Zoom - the main 2 conferencing systems I use everyday on my job. Windows 10. It's slowing down Outlook 365 too. Grrrr....

      R
      Newcomer
      rjs1
      Newcomer
      October 27, 2023

      Found a FIX!

       

      On my Lenovo X1 Carbon ThinkPad Gen 8 running Windows 10 - this worked (after a solid week of frustration). You didn't mention missing advanced power options. If you have them, skip to the part about changing the Intel Graphics Command Center settings. If not, follow the instructions to add the missing power options, then set everything to maximum performance.

      https://www.youtube.com/watch?v=bZGgVqEE7HE

      Also, for my wifi card, I updated the driver directly from Intel rather than Lenovo. Not sure if that helped, because the same problem was happening over a CAT  6 ethernet cable, but it couldn't hurt.  

      Good luck - this was the most frustrating #$%$&^!! computer problem I've faced, and I'm in a job where I use both Zoom and Teams daily. 

        G
        Newcomer
        gsandeep2023
        Newcomer
        November 7, 2023

        So sounds like the proposed solution has not worked consistently and this may not be the final solution. Is that correct? I am bit hesitant to make the proposed change only to find out that it created unnecessary impact on the existing performance while not actually fixing the original solution this thread had been created for.

        G
        Newcomer
        GuipingAuthor
        Newcomer
        October 27, 2023

        Thank you SO MUCH! I was able to fix the problem on my Lenovo ThinkPad E495 Windows 10 by following your instructions. 

        Two additional notes:

        1. When starting CMD prompt, need to "Run as administrator".

        2. After implementing the registry changes, do a computer RESTART. 

          S
          Newcomer
          Sarah1S1
          Newcomer
          October 28, 2023

          Whoa... @rjs1 - I have absolutely no idea about any of that ninja stuff... I followed the directions in that video to the letter, and with @Guiping 's suggestion looked up how to Run as administrator, and then did a computer restart when it was all done... and at least for today - THE PROBLEM IS FIXED!!! On Zoom, with no drop in internet speed!

          I hope having changed all those settings won't be harmful to anything else on my computer. For now, congratulations team here and @rjs1 thank you so much for your detective work!

          S
          Newcomer
          Sarah1S1
          Newcomer
          October 30, 2023

          And... now it's not working again, super low speeds on Zoom. @rjs1 and @Guiping - did this solution keep working for you?

           

          G
          Newcomer
          GuipingAuthor
          Newcomer
          November 13, 2023

          Like many on this thread, I performed this "fix" (among many others) to address this issue. It worked initially but the problem returned. However, I found one more thing that's worth trying for those with a Lenovo that seems to have worked (fingers crossed). I have a Thinkpad X1 Carbon Gen 8. 

          • Open the Lenovo Vantage app
          • Under Device Settings, select "Performance Boost" (Zoom was listed as one of the "Apps to boost")
          • Turn off Performance Boost

          I hope this helps some folks. This has been the most frustrating computer issue I've faced.


          Thank you @gweeks ! 

          I followed your instructions (nothing listed under Performance Boost but I turned it off anyway). 

          No obvious speed drop after a few Zoom tests.

          Thank you so much!!

          J
          Newcomer
          jackal777
          Newcomer
          November 6, 2023

          Hello @608130. Can You help with the above, we still have issues.

          S
          Newcomer
          StinaStone
          Newcomer
          November 9, 2023

          I've been having this issue for months, only on my desktop PC which is a custom built, high spec machine for running full Adobe Suite. I don't have any issues with other programs, only Zoom. On my laptop, which is running Windows 10, it's fine. I host meetings all the time and when I do, it's so slow. I click 'admit' on a participant and it takes an age to recognise I've clicked it, meanwhile the whole screen freezes and blacks out part of it. When I'm attending a zoom meeting that someone else is running I don't have the same issues, it's SO bizarre. I've followed ALL of the advice I've found from people about changing setting etc etc and nothing has worked so far. Surely Zoom/Windows need to have a convo and get this sorted, it's infuriating. To the point where I'm considering leaving Zoom and just using Teams or Google Meet instead, both of which I have access to.

          N
          Newcomer
          Norddt_Elch
          Newcomer
          March 2, 2025

          Hi,

          I have a similar problem. Unfortunately I do not have a Lenovo but a MacBook. And I don't see this option "Conference Bandwidth Performance".

           

          And it looks like both of my own thread got deleted, so I try it here.

          Terms & ConditionsAccessibility statement
          Copyright © Zoom Communications, Inc. All rights reserved.