[youknownothing]

I'm guessing that for this to work you need to be able to selectively refresh parts of the screen at different rates? a 1Hz refresh rate would be rubbish just to follow the mouse cursor, so at least that part of the screen needs to refresh faster. However, it does make sense for the parts of the screen that are mostly static. Looking at my screen as I type this, the only part that needs a high-refresh rate is the text-box where I'm typing (I can type several keys per second so I wouldn't want a refresh rate of 1 Hz). However, the rest of the screen is not changing at all so a slow refresh is perfectly fine.

[elif]

You're not moving your mouse 100% of the time. Probably less than 25% of the time. Probably using your keyboard less than 25% of the time. It doesn't need to degrade experience OR selectively refresh part of the screen (which it certainly doesn't).