Easy fix performance issues Teams high cpu and extreme memory usage

This blog post helps you fix performance issues Teams.

Lately I noticed that my PC was getting slower and slower. Opening a Teams channel in Microsoft Teams took ten seconds, opening a chat conversation as well. Writing an email in Outlook was successful, but the letters appeared on the screen with a delay. The performance of Teams bothered me the most. In Task Manager I found CPU usage was high, and more than 1 GB of memory in use was no exception. There is no way to limit the memory usage of Microsoft Teams. There is a lot of complaints about performance, but Microsoft doesn’t prioritize this as an important issue yet

teams performance high cpu and memory

Luckily I have found the right settings to improve the performance of Teams. Which immediately made my entire PC less slow.

Fix performance issues Teams

Perform the 3 actions below to solve the performance problems with Microsoft Teams.

Disable GPU Hardware acceleration

  1. In Teams, click your icon / photo.
  2. Choose Settings.
  3. In Settings, in tab general, enable “Disable GPU hardware acceleration“.
  4. While you’re here, also disable “Register teams as the chat app for Office…“.
  5. Restart Teams. Please note that Teams runs in the background. You must close it from your system tray (near the clock at the right bottom).
fix performance issues teams disable gpu hardware acceleration

Disable all Teams addins in Outlook

  1. In Outlook, click Options.
  2. In the Outlook Options window, click Addins.
  3. At the bottom, click Go… (next to Manage: COM Add-ins).
  4. Untick Microsoft Teams Meeting Add-in for Microsoft Office
  5. Click OK.
  6. Restart Outlook.
teams performance disable outlook addins

Clear Teams cache

  1. In Windows Explorer, go to  %appdata%\Microsoft\teams .
    Then delete the following files:
    a. In tmp folder, delete all files.
    b. In Blob_storage folder, delete all files.
    c. In Cache folder, delete all files.
    d. In IndexedDB folder, delete the .db file.
    e. In GPUCache folder, delete all files.
    f. In databases folder, delete all files.
    g. In Local Storage folder, delete all files.
    h. In Application Cache > Cache folder, delete all files in it.

After these 3 modifications to your system, Teams performs much faster. As far as I know, there are no other fixing performance issues Teams available. But let me know in the comments if you experience any issues or if you have additional information and tips.

Settings for the system administrator

This section was added after one of my commentors asked me:

Is there a registry key I can use for this?

As an system administrator as my profession, I surely understand this question. I always want my users to have a more than great experience on their device. In the meanwhile, it must be a safe environment and it should cost me as little time as possible 🙂 So let me me answer this question for the GPU Hardware Acceleration and the Outlook addin

Automate disabling GPU Hardware Acceleration in Teams

User settings for Teams are saved in a JSON file desktop-config.json:
or as you see the path in Windows Explorer, probably:

This JSON file is UTF-8 encoded so you can open and read it with any text editor, like Notepad++. Search for DisableGPU in the file, and you will find “disableGpu”:false or “disableGpu”:true.

If you want to automate this setting for your users, you need to search and replace “disableGpu”:false for “disableGpu”:true. This can be done with a simple Powershell Script. And then let the script run via a GPO, SCCM or Intune

Automate disabling Microsoft Teams Meeting Add-in in Outlook

The load behavior of the Microsoft Teams Meeting Add-In is controlled in the Registry. To set this add-in to Disabled, do the following:

  1. In your Registry Editor, go to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Outlook\Addins\TeamsAddin.FastConnect
  2. Double-click LoadBehavior, set the value data to 2, and click OK. This disables the load at startup.
    If you want to enable load at startup, change it to 3

This setting can be easily deployed with a GPO policy. If you’re on Intune and Azure Active Directory, you may want to deploy a simple PS1 script that modifies the entry.

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This was a godsend!!! Teams had become almost unusable for my organization. Thank you!


Thank you so much for this!

I didn’t delete any of the app data – just the other two steps. These took my average RAM usage from ~600MB to ~100MB. Wow.


Is there a registry key I can use for this


All I did was disabled the acceleration, and WHAT A DROP in memory! Thank you!!! Mine went down by over 400mb, and is now under 100mb.

Unfortunately I really rely on the status indicator in outlook, so couldn’t turn that part off, and I’m not in the mood to delete anything currently, as I’m already having enough issues with my comp lately (don’t want to compound things haha).


me too. i just disabled the settings from teams as recommended. it actually worked! Thanks!


hi, my teams video is persistently sticking and not work properly at all. I’m on a fast fibre connection at home, so its not the broadband, any recommendations?


thankyou John

Antonio Huete Jimenez

Thanks a lot!


I’m curious, what’s the logic behind disabling GPU hardware acceleration? It should help the overall performance using a modern GPU card, isn’t it?

I must say I have this feature enabled, with a Nvidia GeForce GTX 1060 and my mem cosumption in Teams is around 100MB, CPU lower than 1%.


Part of the problem is Chromium engine and GPUs. The rest is MS.


Wow…100MB I wish!! I have a HP Laptop from 2018 with NVIDIA® GeForce® MX130 and Intel® Core™ i7-8550U @ 1,8 GHz. 8GB RAM. My Microsoft Teams consumes around 2GB of memory (2 GIGS!!!), with Chrome also consuming tons of memory and other programs as well my RAM reaches 100% in no time, then Wi-Fi starts dropping for some reason and the entire system gets slow, its a pain to work remotely with teams always crashing my calls and wi-fi dropping, never in my life I had so much trouble calling someone or even working. I will try this right away… Read more »


Awesome! Solution. Worked for my team. 🙂


Thanks ! Now my whole laptop and MS Teams is working much much better ! Thanks a ton ! 🙂


Super, It worked for me


Any way you could assist with the “simple” powershell script? I am not very good at it and would like to try and roll out an automated fix for all of our users.


Thanks a lot, this works wonders.

“Register Teams as chat app…….” this keeps coming back after restart.

Leah R.

Disable GPU Hardware acceleration and clearing cache did the trick! Thank you!!


For the record, in the ‘disable Outlook addins’ section, TeamViewer is an entirely different application, it is not created or maintained by Microsoft, and is not related to Microsoft Teams in any way.


Hi John how about an update on the original article, for us not so technical guys. Thanks.


Application Cache folder is not visible


Between 7 and 9 video meeting streams on Teams make my Lenovo ThinkPad T460 laptop. I type message very so slowly. some freeze.
Please reduce memory usages

Last edited 3 years ago by Lenneth

Followed directions, went from 700+ MB RAM usage to 1.5 GB RAM usage.


Hi, I disabled the acceleration and cleared the cache as instructed here, but TEAMS still runs at 700+ MB RAM unfortunately.

Do you have any other tips?

Working on Surface Pro X.


Uddave Jajoo

Hello John, I used the script mentioned below to be run as external task through WEM on logoff. I can see that when user is logged off, the path on profile store where desktop-config.json is saved gets updated with value “true” for disableGPU

However, when user logs in again, and checking further on the location – AppData\Roaming\Microsoft\Teams the value for disableGPU shows as false.
Not sure what i am doing wrong here, any suggestions please?

Script running on logoff
cd $env:userprofile
((Get-Content -path “AppData\Roaming\Microsoft\Teams\desktop-config.json” -Raw) -replace ‘”disableGpu”:false’,’“disableGpu”:true’) | Set-Content -Path “AppData\Roaming\Microsoft\Teams\desktop-config.json”

Roy Davis

I am seeing the same then with WEM, Teams cant start first or be launched first. WEM has to be allow to do its thing on the desktop-config.json. There is a lockfile that appears to stop you from editing this file if teams is open first. But it works with the gui, its putting it in a temp file and then when you close it the lockfile is gone and the settings still to the desktop-config.json

Roy Davis

I changed it to this and the GPU offloading is now working as it should via WEM
$filepath = “$env:APPDATA\microsoft\teams\desktop-config.json”
$existing = Get-Content $filepath -raw|ConvertFrom-Json
$existing.appPreferenceSettings.disableGpu = ‘true’
$existing.appPreferenceSettings.openAtLogin = ‘false’
$existing |ConvertTo-Json|Set-Content $filepath

Mikel Maestre

I’ve found that with these options in the powershell script it displays the right settings in the json file and also in the Teams settings.

$filepath = “$env:APPDATA\microsoft\teams\desktop-config.json”
$existing = Get-Content $filepath -raw | ConvertFrom-Json
$existing.appPreferenceSettings.disableGpu = $True
$existing.appPreferenceSettings.openAtLogin = $False
$existing |ConvertTo-Json -Compress | Set-Content $filepath

Barb Dee

Hi John! I don’t usually respond to stuff like this, but I had to take time to thank you SO MUCH for this article. It’s helped performance on my system like you wouldn’t believe – or maybe you would 🙂


Hi im not very tecky! Please can you help…when i’m in Microsoft Teams it’s running really really slow. I have tried to disable the GPU but i’m not getting the option to do this, when I click on my profile picture in Teams, i select Settings and then General…I can’t see the option to disable GPU, is there any other way that i can try to make it run faster? Thank you for reading 🙂


Thank you so much – you have saved a LOT of people a lot of time and frustration. 🙂


Thank you soooo much for this.

Colin Knowles


Jason Gallas

Made these changes and it didn’t do anything. I’m still sitting at ~750mb RAM utilization although the GPU is not involved any more (not sure why that was an issue to begin with though).


This is normal and by design. Teams uses what RAM is available in order to give you optimal experience and, if there is a lack of RAM and other apps require it, Teams again releases it. https://docs.microsoft.com/en-us/microsoftteams/teams-memory-usage-perf … Teams uses the Chromium engine to render and “Whether you’re running the Teams desktop app or the Teams web app, Chromium detects how much system memory is available and utilizes enough of that memory to optimize the rendering experience. When other apps or services require system memory, Chromium gives up memory to those processes. Chromium tunes Teams memory usage on an ongoing… Read more »


I have had a lot issues with TEAM lately


thanks. This helps already to make Teams a tad faster. I wonder why a tech giant like Microsoft keeps releasing buggy products… they seem to miss the very basics of consumer-first approach…


hi thank for do this i need help but i need it o much


Thanks! This was really helpful and reduced my CPU usage and fan noise on my Dell Laptop significantly.


ya, it worked perfectly


Now my cpu isn’t maxing out nice tips man


dont find .db file…

thank you



I did a dir command, and saw two *.*db files, opted to renamethem, then delete after I was sure Teams was functioning correctly.


was able to reduce half gig worth ram thanks


Look at this HUGE feedback forum with over 1400 comments and 17000+ votes: Teams uses 600MB and is super slow! – Microsoft Teams UserVoice


Unfortunately, none of this helped in my case (Teams v1.4.00.2781 x64). Teams uses 10-25% CPU constantly, on an 8-core machine, even when the window isn’t open. I noticed that the Add-in in Outlook is re-enabled every time Teams is restarted, even if the option to register Teams with Office is disabled. I also noticed that in chat windows, the Pop-Out Chat button is constantly being added and removed from the toolbar in an endless loop. Figuring it might be related, that it’s stuck somewhere and freaking out. Even after completely wiping Teams from the system and re-installing from scratch, it… Read more »

  1. Double-click LoadBehavior, set the value data to 2, and click OK. This disables the load at startup.
  2. If you want to enable load at startup, change it to 3

explain that UP!!!!!!!!!! 🙂


I realize this article was originally written in early 2020, when MS was taking on more Teams customers at a pace not seen before. They struggled to balance roadmap priorities. It may not seem like it, but they did give priority to Teams performance issues. It’s still not where it needs to be, but it has come along way. As far as recommendations in this article, many are still generally good ideas. Your mileage may vary and you could even have problems others wouldn’t. Clearing out old temp files that accumulate over time is a great idea. I wish Teams… Read more »


Linux cache folders are located in ~/.config/Microsoft/Microsoft Teams/


Video is absolutely terrible on Teams. We use a corporate network with high quality video camera’s compatible with Teams and we never know when the video is going to be good or bad. No issue with Zoom can’t believe Microsoft isn’t addressing this!! I’ve tried every solutiion out there and nothing improves this problem. If I switch to Zoom on the same computers NO ISSUE!! Come on Microsoft fix this!!


apply it, ver (64 bits), good result, thanks!
From using 1G and 30% cpu to 600MB and 3% cpu


Thanks for the tips, was a great help, much appreciated!


Works like a charm

Patrick Martin


Vivek P

what is the use Teams add-in if can’t use in outlook
also ‘Disable GPU hardware acceleration‘ didn’t help


Im on a surface and have found that Teams has MAJOR performance issues when running through DisplayPort to an Ultrawide monitor. I’ve switched to a Display Port -> HDMI cable and the issue seems to have gone away. Not sure what about DisplayPort is causing issues, but eliminating it has fixed my setup… at least for now.


did your issue include blackouts/flickering? I’m having the same issue and believe it’s due to display port but am not sure…


Disabling the GPU acceleration should fix the blackouts.


no noticeable difference, still takes some 30% of the CPU and 50-60% of CPU while sharing window. for comparison AnyDesk does it by using less than 4%. whoever developed Teams should be fired.


can’t say anything since Microsoft Teams is Developed in Electron, which uses Chromium for rendering.


Reduced memory usage from 1.3gb to 400mb. Even our IT support could not figure this out and they were asking me to get a new laptop. You rock 🙂


its still using my dedicated gpu


Could you provide the full path example for Application Cache. I could not find it at the root of %appdata%\Microsoft\teams. Great article!!


Thanks for taking the time to put this together.

I have one question about doing the following:

1.2 Disable all Teams addins in Outlook

Won’t this remove the feature to schedule teams calls in Outlook. This is a feature that I cannot give up.



noice it helped me a lot

Patrick Martin

This did not help unfortunately.

It would be interesting if you posted a video demonstrating a before and after scenario depicting the CPU usage prior to making these changes and then after making these changes. I’ve seen various forums giving more or less this same advice but very few people report it making a difference to their performance. thank you

Last edited 2 years ago by Patrick Martin

I noticed a change from 1gb memory usage drop to 700mb, pretty decent drop


This is due to your GPU not using its video ram, which is a shared ressource on integrated GPUs like in the most laptops. External GPUs have their own VRAM, integrated do not (most of the time).

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