Native 4K or Checkerboard "uprendered" 4k

[mutantsushi]

Peh said:

well, apparently in the Tomb Raider comparison above the PS4 Pro version is quite blurry lol
It is not supposed to be blurry with this checkerboard technique, but I'll be damned... blurry it is. 

The Tomb Raider example's blurriness was due to Depth of Field blurring kicking in at a closer distance.
Which does speak to the over-all power of the system, but isn't related to the checkerboard upscaling itself.