Wow, this is great! I've been hoping for eInk with good refresh for years, and seeing it in action in your demo is very cool.

> The screen can refresh up to 30 times per second, this will degrade the eInk display rapidly. Do not use with fast changing content like videos.

Have you noticed the degraded display in your Kobo? I imagine it's not uniform across all pixels, since editing would mostly be localized to your cursor area (though scrolling and other actions would be wider). I'd also be interested in hearing what the timeline looked like for the quality drop, since it sounds like it's a function of the total number refreshes for each pixel.