[zozbot234]

Screen update latency can be optimized for the interactive use case. The default for e-readers is to do lots of full refreshes (slow) because they're less distracting than leaving small artifacts on the page after a partial update.

[bartread]

Yeah, that would make sense: if you can just update the parts of the screen that have changed it should be a lot quicker. Again, for an eReader, when you turn the page it makes sense to do a full screen update: not necessary in other cases. I do really love the idea of an ePaper screen for a laptop. It would be great on the eyes, and more energy efficient.