One of the first things I noticed with my MacBook that really bothered me was the delay before I could turn on or off caps lock when I was typing. If you're typing quickly and want to quickly enable caps lock, you can't by default, and there's no user-facing way to disable this feature. However, there's a quick Terminal command you can use to turn it off.
hidutil property --set '{"CapsLockDelayOverride":0}'
That's it! Once you've run it, it's immediately in effect. Your caps lock delay will now be switched off, so you can type as fast as you want and switch caps lock on and off without getting frustrated about unnecessary delays to your typing.