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.
Teams is basically skype in disguised.
29 votesyolo commented
significant is an understatement, i'd use an other adjective starting with the same letter