Additional features, settings, or issues not covered by specific Microsoft Teams categories
Apologies in advance for the me too nature of this reply.
I'm facing similar issues of a MackBook Pro 13'' 2020 that is well speced: Microsoft Teams Helper grabs the %CPU and also %GPU. So I'm afraid it's taxing the laptop both way thus pushing fans to go full speed.
This translates into an awful user experience and taking into account that MS Teams is used in my organisation as the corporate tool for communications it reflects poorly on Microsoft and their comms solution.
Hoping for a fix in the near future.