I'm seeing slow performance switching/joining channels, and it's not clear whether DMs or @mentions are working consistently. Messages I send are frequently com

I'm seeing slow performance switching/joining channels, and it's not clear whether DMs or @mentions are working consistently. Messages I send are frequently coming back as 'could not send message'. I'm not delighted by their use of might/may language and lack of detail in the status messages. Slack is pretty clearly not working well for a large number of users, and based on the above IDK what can be attributed to degradation vs. people being unresponsive.