Except each macOS upgrade slows down the machine to a crawl. I still remember when I got my 2013 MBP 15”, you opened the screen and the login appeared smoothly.

Except each macOS upgrade slows down the machine to a crawl. I still remember when I got my 2013 MBP 15”, you opened the screen and the login appeared smoothly. Now it struggles at each step of the fade in, and lags a few seconds before showing the password box.