Performance has been and continues to be a big focus area for Teams. One main area we have made improvements in is responsiveness for the most frequent user actions of switching between Chat, Channel, and Activity. We are also focused on reducing resource consumption and application load time. More improvements are on the way.
We’re currently working on defining a compact mode experience. I will post more details when we have more to share.
439 votesAnonymous commented
This is one of the reasons we are staying with Slack.