This channel on our community server Mattermost is a good place to share feedback. It would be helpful to know your OS and version. You can configure unread messages to stay on the top via desktop/webapp.
with regards to the performance issues you’re experiencing: The app has its own database and the bigger it gets, the slower the app will be. After talking with the developers about this behaviour I experienced on my mobile client, they suggested to relogin to the Mattermost server profile that has the problem and in fact, this really fixed it for me. Logging out of the profile truncates the database and after a relogin, you start with a fresh database. Can you check if this also helps you and your colleagues with the performance for the time being?
yes - but its hard do tell your customer/users to find and click the logoff button in a freezing app to unfreeze it
i also know that you can forcly kill the app but normal users might not know how
in the end its a bad user experience
I’m not saying that this is a perfect solution and the issues are being adressed already since there are a lot of reports for this behaviour, but it’s an adequate workaround for the time being, if it helps in your situation.
Being a heavy mobile user myself, I can confirm that this has always helped me when the app starts getting slower and it fixes the problem for about 3-4 weeks for me (but that highly depends on your usage profile).
If the fix does not work for you or your users, it must be something else and should be diagnosed in more detail then.