Usually this means it is using a "basic" driver and you need to update it to use a "real" driver - and everything else will get faster too, when you do.
I was thinking of the feature as "up late" but I will now also think about it as "woke up early" - what you describe should probably be the way it works.
Yes, and I understand that it probably would not be able to differentiate between full screen on YouTube or any other full-screen media on another website but that is fine in my books.