When I press Win+L, the “Locked” screen (with the password prompt) appears immediately. That’s nice, but not terribly important: I’m probably leaving the computer anyway.

But after I type the password (to unlock the workstation), the desktop doesn’t appear immediately: instead, the “Locked” screen slowly fades out, the desktop slowly fades in, wasting my time, and all keys (e.g. Win+R) pressed during this interval are completely swallowed, forcing me to wait unnecessarily. This is extremely annoying because when I unlock the workstation, I generally want to use my computer.

How do I disable this fade out/fade in effect and have the desktop appear immediately, in the same way that the “Locked” screen appears immediately?