Thank you for your recent votes on the individual performance items. High memory and RAM usage is something we are continuously working to improve, and the team is hard at work on fixes.
If interested, you can find more details on how Teams currently uses Memory at https://docs.microsoft.com/microsoftteams/teams-memory-usage-perf.
An error occurred while saving the commentEric Roselle commented
For work reasons, I'm running Teams on Fedora 33 . . . and wish there were other options. The working memory size is currently 1.7gb - no video, no active chats . . . just sitting in the taskbar, waiting for contact. For a chat client, this is simply embarrassing. Please fix the core of the program and quit tacking on additional features.