There’s still some features that haven’t been ported over including managing users of a Teams group. You have to go out to the web interface to do that right now. For the normal day-to-day stuff like messaging and meetings it’s been better in my experience.
There’s already a new client that’s way more efficient on resources and more stable. It’s been in beta for a while and is available to turn on for users. https://techcommunity.microsoft.com/t5/microsoft-teams-blog/enable-the-new-microsoft-teams-toggle-for-your-organization/ba-p/3781345
There’s still some features that haven’t been ported over including managing users of a Teams group. You have to go out to the web interface to do that right now. For the normal day-to-day stuff like messaging and meetings it’s been better in my experience.