OLED pixels take slightly longer to turn back on from fully off. I remember some VR headsets had trouble with this and they just set the minimum brightness to "

OLED pixels take slightly longer to turn back on from fully off. I remember some VR headsets had trouble with this and they just set the minimum brightness to "1" instead of "0". Edit: note this is per-subpixel, so you need to set some value in each color channel.