Somehow I'm guessing a lot the modding centralizes with these files. ASCII editing doesn't sound fun to me anymore so glad for the upcoming modding tools. Probably won't bother myself because there are tons off better modders out there.
\GOG\The Witcher 3 Wild Hunt\content\content0\cooked.redscripts
\GOG\The Witcher 3 Wild Hunt\content\content0\cookedfinal.redscripts
Looking at all the graphical settings in the xml and ini files, there might be a sweetspot setting for people with 1 GB vram or below minimum gpu in 900p for example. Maybe trying to tweak to find xbox one graphical settings
I mean if those texture downsampling options do have an effect and it does what I think it does.
With those PhysX CPU and GPU dll files I wonder if there's any effect with selecting what your PhysX processor is or are those 'hard baked' in the game engine...