I see a freaking loading screen with the Outlook logo for 5 seconds before the window is updated with the meeting name along with a button to dismiss it. Yes that's everything in there.
How does Microsoft think this is ok?
Every time.
And then there's the fact that, if Teams wasn't already loaded, you can be up five minutes late for a meeting waiting for Teams to roll out of bed despite having clicked Join bang on meeting time.
I don't have the most up to date system at work, but it feels like 90s wait-computing.
Like, sending an empty folder to the bin:
Win 10 this afternoon took seconds to display a dialog box with no content, the a couple seconds to add a progressbar, then a second to add the cancel button, then multiple seconds to finish showing progress.
But at home a 1991s system with System 7 completes the same task instantly without needing a progressbar.