Did you see it happening on really "simple" applications like Terminal? What's crazy to me is how you saw it happening on a fresh OS install... had you installed any other software? Or any kind of customization to settings, locale, stuff like that? Curious how that could be happening!
Once one app starts lagging, they all lag. Terminal, TextEdit, Safari, Notes, IntelliJ, everything.
I'm well north of 130wpm, but I don't think that matters for the issues that my Macs have had to deal with, as I used to be well below 130wpm and still experienced such issues.
Everytime i tried to run their IDE's on mac os i gave up because the abysmal typing/scroll performance.
I think textmate broke my brain back in the day, can't stand any editor that can't run at 60fps. (unless it's vim/nano on ssh)
There have been zero reports of widespread lagging which clearly indicates that there is some problem with your setup. IntelliJ is the likely candidate especially if you are doing Scala or Kotlin development.
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.
Resetting my bluetooth module and factory resetting all connected bluetooth peripherals helps usually. But it's a pain.
I used to have this on my work computer, and through some debugging tools that are not available publically or on macOS, I was able to track it down to my shell spawning a git process very frequently; until you mentioned this I suspected that this was the case on my MBP as well.
Could it be that this is just generally true? I don't remember this on my 2014 MBP, just my new 2019 16" MBP. Supposedly the latter is a more powerful machine.
It's gotten so bad that I frequently consider wiping my computer and seeing whether it'll be fixed with a new environment.
If my Macs couldn't keep up with my typing, I'd have kicked them to the curb a LONG LONG LONG time ago.
My theory is that the Intel macs generate too much heat for the chassis to handle (I'm currently on a 16" 2019), especially when being used by IntelliJ in projects with many files, having additional dev stuff running in the background, and with an external monitor connected.
Additionally, I perceive more lag on the Mac itself than on the external monitor, so I think there is a component that is due to the slow speed of the Macbook Pro display.
No, seriously, what’s the secret?
Back when I got my first Mac (2012) I was plateaued at 80-100 wpm. From there, it was an accumulation of intentional practice for fun and enjoyment.
You are, of course, wrong. Cursory googling will show average typing speed to be about half the figure I noted. I've never worked with anyone who typed as quickly as I can, and I've been working quite a while.
But hey, at least you got to drop a dig in about adverbs, so you've got that going for you.
90 WPM is ok, certainly above average. But please don't take it personally, I was just scrolling through the comments and saw what I thought was a typo, and if not, thought I'd share my perspective. 120WPM can be considered "fast".
If 90 WPM is "very, very fast" then what about those at 120 or 150?
I'm rolling
It's incredibly frustrating, and just one more thing to add to the pile of annoyances that I have with Apple products lately.
But I do think the problem is fairly recent as in the last 4- 5 years after certain macOS update.
It works when you have little to no CPU usage, but even at 20-40% CPU typing speed lag start to show.
They all lag when I type. I hit a key, and it takes a while before it shows up on screen. The effect is at its worst in Safari, but it shows up most everywhere else as well.
Sometimes, I'll type a few letters or even words before they start showing up. Doesn't matter if I wipe the machine and reinstall, and Apple has never been able to resolve it for any of their machines I've owned.
I do type faster than average, but I don't think it is humanly possible to type fast enough to make a proper computer lag. This has never been an issue on any of my concurrently owned Windows/Linux machines. Only on Mac, and on every single Mac.