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Comment by reddit_clone | Hacker News Reader

I have a strange lag problem too.

My CapsLock key (mapped to Esc because I am a Doom Emacs User) gets really slow over days. Like in ~4 seconds to register. A reboot fixed the delay. But it degrades again.

Happened twice. Thankfully, after the last reboot, it seems to be holding.

Last year MBP running Big Sur.

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Have you applied the 11.5.2 update? The Caps Lock slowness/beach ball issue seems to be related to the high WindowServer CPU issue and has gone away for me since I applied 11.5.2.

I map it the same way to caps lock and experience exactly the same you describe. I noticed after the last patch a few weeks ago it went away for now. Been driving me nuts until.

For me it's the '0' key on my numpad on an external keyboard. Takes up to 500ms to be scanned. All other keys have input lag, but are scanned instantly. Keyboard works flawless on Linux. Really weird. Wondering if the '0'key is somehow scanned in software on Mac.

I was running an MBP for work and running Doom Emacs got me the exact same issue, that would spread to everything. Luckily I was up for a new machine before things got to bad and on the new Dell Percision I haven't had any issues (after I installed Ubuntu on it)

Huh. Me too. It's like it switches between two modes: typing, or emacs-keys-movement. And sometimes gets so bad it takes almost a second between them.

Resetting my bluetooth module and factory resetting all connected bluetooth peripherals helps usually. But it's a pain.

Coincidentally, my lag issues got a lot worse since upgrading to Big Sur. As did my thermal throttling.

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