For people interested. Here is a comparison of how different internal resolutions affect the light ray affects without AF (Because the one on the wiki is pretty terrible). AF seems to do the same thing as resolutions. So AF 2X on 1X native resolution gives the same effects as running the game at 2X native without AF.
I wonder though, Is it even possible to fix this? Because it looks like something is coded into the game that bases the density of light rays on how much pixels it takes up on screen to make them fade out when getting closer. So technically speaking is the effect be properly emulated.
Spoiler: