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 know you are patiently waiting for this feature. This feature is being implemented in stages. Fast tenant switching is currently in testing both internally and with early customers. We expect to release to the public in the Fall. I’ll post an update once it’s rolling out.
Full multi-tenant, multi-user support will be added after fast tenant switching.
~AlexNikolay Nastev commented
ETA? Why development is so SLOW and no ANSWERS from dev team???
Shame on you, MSFT...
This feature request is still being reviewed.
This feature request has been declined due to the shift with Win10 mobile devices.