An error occurred while saving the commentSteve commented
I see the same behaviour. In fact, when Teams is running Outlook spikes CPU utilization as well.
Thank you for your reports. We are aware of recent performance issues with Microsoft Teams meetings, especially on laptops and when using external monitors. The team is working to resolve these issues.
In the meantime, please find troubleshooting information here: https://docs.microsoft.com/microsoftteams/troubleshoot/known-issues/teams-slow-video-meetings-laptops-4k.