Which Provides max Possible Eye Candy for Red Dead Redemption 2 while staying most times between 45-55 FPS on a 970 that is Slightly OC Paired with an r5 3600X on 1080p.
I thoroughly Optimised it Myself via Youtuber videos ( Hardware Unboxed ) And my own Config Over Multiple hours and countless changes.

Don't forget to change the Bottom line of the text 

Aka "NVIDIA GeForce GTX 970"

To the GPU you have at best you copy it prior from your file out.

The Config file is Located here %USERPROFILE%\Documents\Rockstar Games\Red Dead Redemption 2\Settings\

Just Replace the file with mine and change the GPU description at the Bottom of the file! otherwise the file won't load!