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Re:Tell HN: Slack decides to close down IRC and XMPP gateways by lttlrck on Wednesday March 07, 2018 @08:10PM (#16541453)
Animated images and emoji can be disabled in the Accessibility settings.

Spritesheets can be disabled under Advanced.

Maybe it helps, sorry I have no before/after but my Slack is sitting at 300MB right now and I deal with an high number of very active channels.

Re:Tell HN: Slack decides to close down IRC and XMPP gateways by rvanmil on Thursday March 08, 2018 @03:09AM (#16543063)
> but my Slack is sitting at 300MB right now

You must be overlooking all the helper processes.

Re:Tell HN: Slack decides to close down IRC and XMPP gateways by rplnt on Thursday March 08, 2018 @03:35AM (#16543158)
Animated emojis can eat 100% CPU on my MacBook Pro if someone spams enough of them. It's insane how demanding and bloated the app is for what it does.
Re:Tell HN: Slack decides to close down IRC and XMPP gateways by always_good on Thursday March 08, 2018 @10:21AM (#16544828)
Yeah, I noticed that too. Except one animated emoji tagged on someone's message will do it for me on a new Macbook Pro.