visualsettings.dat# Adaptation Adaptation.min.step.size 0.001 Adaptation.max.step.size 0.01 Adaptation.step.size.mult 0.01 Adaptation.threshold 10.0 Adaptation.sun.exposure.tweak -2
Seems to have completely (& I mean completely) fixed the issue for me.
I even set my brakelights 13x higher than I normally have them (just to test, see pics) & still no eye adaptation/dark screen issue happening
I'm using PostFX = Ultra, just in case that makes a difference, but I doubt it. Adaptation/dark screen issue is probably stronger on Ultra if anything.
If you test it out, let me know you're results. Might be a combination of other settings & these ones required to get it to work. So glad it's gone tho