Don't use Slack, but I have the same experience with Teams for example. Using it is torture on my desktop (i5-8500 - 6 cores and 32 GB ram). There is very notic

Don't use Slack, but I have the same experience with Teams for example. Using it is torture on my desktop (i5-8500 - 6 cores and 32 GB ram). There is very noticeable lag when typing, on the order of one second. When moving the mouse around, all the animations are laggy (they take forever to start). Of course there are what seem to be caching / network-related issues, like switching between conversations always takes forever. But there are also clearly UI issues, like when I try to scroll up in a newly-opened conversation, it scrolls a bit, waits to load, then it sends me all the way back down again before jumping around to some random position. This happens when there are no new messages in the chat and I only try to scroll a little, not go back days. And the crown, for me: somehow, the number of letters out of order when I type is through the roof in Teams. It happens practically on every message I send, whereas this basically never happens in Telegram (where I send the same kind of short messages) or when I write long-form emails.