Seems good. My biggest problem with Teams isn't performance though, which has generally been fine for me on the Mac M1 chip, but how awful a lot of their text formatting is.

Try creating a code block (``` followed by a space), or inline code (`my code`), or even a quote block (> heya) and you'll see how inferior the UX is to Slack. Losing the ability to exit the created block is the biggest flaw, but it's also extremely tricky to just get things to look how you expect them.

Also, this is kind of dumber but I really wish there were more emoji reaponses. Slack got me used to responding to messages with whatever emoji fits my actual mood (big fan of and ), but in Teams you have to choose one of six for no obvious reason.