@kellibergi21474 sounds like a keyboard issue. Try and use a USB keyboard and see if the keys now recover quicker. It does sound like your keyboard may actually be worn out.
If a USB keyboard does work the way it should then you might consider replacing your computers keyboard. The keyboard is intended to be part of the top case. That means it is not the easiest to replace. There are no guides for this specific task yet. Use something like [https://www.youtube.com/watch?v=MxYCpUMHf7I|this video] to get to the keyboard. Around the 6:35 min mark you see that the keyboard is attached to the top case, usually via some plastic tabs that need to be broken off. Then you can get a replacement keyboard and attach that with some small screws. Of course, you can also try and find the top case with the keyboard already attached, but that is usually a bit more costly while the actual work is still the same (minus replacing the keyboard).
If a USB keyboard does not work then the issue could be Windows settings. Consider adjusting the keyboard repeat delay and rate in the Control Panel, or running the keyboard troubleshooter. Might be different for your version Windows since we do not know which version yours is