Quote from Scawen :

Hmm, no, I think high persistence is the actual pixel remaining lit / fading out too slowly. Low persistence, I guess is just making it brighter for a shorter period of time (though the final result appears a little darker).

Hi Scawen,

Just want to say great work on your Rift implementation! It's just brilliant!

I just wanted to add to your comment about low persistence. When one selects to run the refresh rate at 75Hz the image gets scanned to the display for 2ms and then the screen turns black until the next correct scan data gets sent to the display, instead of the full 16,6ms that a normal 60Hz display shows an image. The pixels do not shine brighter with low persistence and that's why the screen dims as the screen is actually strobing as it turns on/off very quickly.

Edit: grammar