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Just filmed myself pressing a key on slack (linux client). Framerate was 30fps.

5 frames / 160ms for the key to appear at the start of a chat line.

3 frames / 100ms for the next key to appear

Firefox in a plain text box takes 2 frames / 65ms

What OS you using? I haven't noticed an issue on the rare occasions I use my (7 year old) mac



I'm using Firefox on Fedora 31, but this seems to be an issue across multiple OS versions. The machine is a Dell Ultrabook with a Core i7 processor and 16 GB of RAM.


filmed at 240fps so 4.17ms per frame. Desktop from 2014. Intel CPU and GPU. 60fps 4k monitor, so 16.67ms per frame.

Slack desktop application best case: 325ms with spell check disabled.

Telegram desktop application worst case: 25ms with spell check enabled

I am sure I wasn't precise in my key press detection. Nonetheless it's still a really sad difference.


It's odd. What desktop environment are you using? Mine's from 2014 or 2015 with xfce. spell check is enabled from the looks of it, but only comes in when I press "space".




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