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PLEASE fix desktop app performance on macOS!! Constant high CPU usage and memory leaks!

I'm running Teams desktop app on macOS Catalina and the performance is TERRIBLE! If I get on a single 1-on-1 video call, the fan on my 2017 MacBook Pro starts spinning like crazy, CPU usage goes up to about 85%, and app begins to use over 1GB of RAM! To put it in perspective, I can get on a Zoom call with 10 other people, CPU usage is at less than 20%, and memory usage never passes 300MB

I've read on other forums to disable GPU acceleration in the settings, but that has only marginally helped.

Please fix your app!

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  • Alastair Lord commented  ·   ·  Flag as inappropriate

    Similar experience here on a 2019 MacBook Pro 8 core I9 processor with 64Gb RAM and 8Gb on the graphics card.

    For me the problem starts when I run a combo of external screen (LG 5K) and Microsoft Teams, then make a video call in Teams. This causes the process WindowServer to grab most of the CPU, and from there everything goes white hot until I dump the call and unplug the external screen.

    I can then safely reconnect the external screen, and all is well until the next video call.

    Workaround: I unplug the LG 5K external monitor before running a Teams video call, and the problem does not arise.

  • NeilC commented  ·   ·  Flag as inappropriate

    This has been doing my head in since lockdown started in March and we had to move to Teams, will MS ever even acknowledge the issue?!

  • Anonymous commented  ·   ·  Flag as inappropriate

    Is anyone looking at this? It is almost unusable.... Need testers, there appears to be plenty of folks available to help...

  • Anonymous commented  ·   ·  Flag as inappropriate

    2019 i7 MBP. Teams video call and the battery is empty within an hour!! Zoom video call and you can go all day.

  • Anonymous commented  ·   ·  Flag as inappropriate

    Agreed Teams performance went way down after installing Catalina. Video freezes when receiving Teams notifications. App constantly says "bad network connection" even when I know the connection is fine.

  • JasonB commented  ·   ·  Flag as inappropriate

    When I am running MS Teams on Mojave and Teams is minimised, it is using 20% CPU and OSX core process WindowsServer is running at 30% CPU. When I kill the MS Team process WindowServer goes down to about 1%.

    All other apps on my OSX use minimum CPU when they are minimised. For example Slack using 0.1% of CPU.

    So whatever MS Teams is doing it is very inefficient.

  • Ron Kuper commented  ·   ·  Flag as inappropriate

    Bump.

    2018 MBP running Catalina. When I'm running the Teams desktop client, CPU is raging high and the OS stops charging the battery. I tried disabling GPU acceleration, and read message notifications, no avail.

  • jo commented  ·   ·  Flag as inappropriate

    it's terrible, I cannot give demo's to clients anymore... macbook completely slows down...

  • Boker commented  ·   ·  Flag as inappropriate

    The same is happening to my MBP i9 32Gb RAM. This problem, that happens every time I use Teams, makes the computer totally unusable. Bad, bad, bad, ...

  • Gary Parker commented  ·   ·  Flag as inappropriate

    Very similar issues here: MacBook Pro (Retina, 13-inch, Early 2015) (2.9GHz i5 w/16GB RAM) running Catalina. As soon as I start a video call, four or five "Microsoft Teams Helper" processes take up ~150% CPU and ~1GB of RAM between them. All other apps on the machine become almost unusable as a consequence.

  • Anonymous commented  ·   ·  Flag as inappropriate

    I agree - Teams performance on MacOS is abysmal. Completely destroys performance on both an 8 core 2019 MacBook Pro 16" and a 4 core 10th gen i7 2020 MacBook Pro 13". It's horrendous.

  • Gooli Raban commented  ·   ·  Flag as inappropriate

    Same problem here. Glad to see I'm not the only one. Catalina and i7 quad core 16GB RAM. Performance is fine on every app, just Teams that maxes out my Mac.

  • Tyler Boggs commented  ·   ·  Flag as inappropriate

    Please fix this, I work for a company with almost 500 Macs with Mojave and Catalina. Catalina users are experiencing this issue too and it is honestly a terrible user experience to have this go off, even on a brand new system. Disabling the GPU acceleration in settings did not do much for users (including myself).

  • Danny B commented  ·   ·  Flag as inappropriate

    Exactly the same thing for me too with a quad-core i7 and 16 GB RAM....

    macOS Catalina 10.15.5 (19F101)
    Microsoft Teams Version 1.3.00.9271

    As soon as video starts Teams just hogs CPU and general performance plummets, do not have the same experience with Zoom or Slack video calls.

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