I used the FXAA included in this shader for H3VR because it ran much faster than MSAA and did not look much worse.
It can absolutely suck in VR, and I could see why it was removed, but it is not entirely useless. H3VR's environments are mostly made up of very simple geometry that FXAA can anti-alias just fine. Especially if you max out the quality at 39 and leave the default settings as-is (I noticed absolutely zero difference in performance between the quality at 10 vs. the quality at 39, stayed at 2.9ms in the same spot).
I really freed up lots of performance headroom with FXAA. It still ran faster in this shader than it does when I add it afterwards as a separate shader (3.6ms compared to 2.9ms).
Can you add it back so that I can update to the latest version? If not, I would really love a more specific explanation as to why it's gone.