[SOLVED] Login screen at a different (lower) resolution than the Desktop

There are users who have a 4K monitor with resolution higher than 1920x1080 and have observed that the login screen has a lower resolution than the Desktop.Login screen is displayed in a smaller size and quickly scales up to fill in the entire size of the monitor.

In my case it has been solved by deleting the file

/Library/Preferences/com.apple.windowserver.plist

and closing the session.

submitted by /u/987perez
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