I try to avoid it because its such a tease trying to get it just load up. To put things into perspective it's faster to load up Facebook with a web browser and just chat with that than to load the Mac Slack app.

It's cool they have those funky loading messages but its just too slow.

Might point out im in Australia and latency is a bit higher. I noticed the same thing in a few African countries.

While latency is higher by a hundred or so milliseconds the loading time is significantly slower. This too on a line that is 99.4%+ better than the average.

It is badly engineered. I had a look at the inner workings and first off they use a web app in a native wrapper, second their websocket negotiation process has a lot of going back and forth just to get started.