MacBook Pro 2020 Slow Authentication (macOS Catalina 10.15.4)
I just got the new 2020 MacBook Pro 16''. Recently I just find the authentication really slow. For example, it took about 20 seconds for the "enter password" window to pop up after clicking the "lock icon" on the left-bottom corner. Also, it took almost 10 seconds to open "Security & Privacy" section in "System Reference". What is more, it took a long time to log in to the system after entering the password and hit enter button.
Here is the system information.