Earlier quoted context omitted.
> MS Teams I really do empathize here, after having to use Teams for around 2 years. It's amazingly slow, confusing, buggy (it would crash the tab quite regularly), and just generally a perfect role model for what software shouldn't be[0]. I'm still quite amazed that Microsoft decided this was acceptable. I'm curious how Slack performs; perhaps they're not trying harder because there's no[t much] competition in this…
For a lightweight MS Teams experience, try: https://github.com/fossteams/teams-cli (terminal client), https://github.com/cacticouncil/lounge-lizard (both Slack & Teams) or https://github.com/EionRobb/purple-teams (plugin for Pidgin).
I kinda have to ask, what features can you enforce in rate limiting in a first party client that you can't enforce in a third party client?