Typing delay of Mac in Korean
It's too slow for the cursor to follow the typing, so if you type the Beatles song lyrics, you'll have to go to bed overnight.
I've been using Mac since 2013, and it's never been solved.
Now I'm using the MacBook Pro Retina 2015 early with Big Sur, and it is not just a problem for Big Sur.
If Apple does not recognize this problem, it is ignorant, and if Apple does not know how to solve it, it is incompetent.