Checkerboarding has its own draw-backs, though.
I think the technique used here works well with the visual style as it has a very stylized look so the lower resolution in-surface detail doesn't stick out like a sore thumb.
Now, on a PC monitor viewed at close proximity, the limitations are evident but from a normal viewing distance (or even a close viewing distance) it looks extremely sharp.
I sit 5 to 8ft (depending on where I pull the chair) from a 55" OLED screen and it looks marvelous there.
Also, even though I tried to make it clear in the video, the frame-rate is 99% stable 30fps. I highlighted the worst case scenario that I found just to demonstrate what CAN happen but I had to play for hours before reaching any sort of noticeable slowdown. It's a very VERY stable game. A few drops here and there are no big deal.
Great to hear
Seems like this technique has more potential than it originally sounded like when I first heard about it. Glad that there's several decent 4K solutions suggested that work well for various engine requirements and developer needs.