How To Make Realistic Games More Realistic (Reshade / RTGI Tutorial)
IMPORTANT
You can always find the RTGI files elsewhere on the web for free, but unfortunately, I cannot make a tutorial for that.
If the game is single-player, just install the ADDON version of Reshade and not the basic one. It might save you some trouble with detecting network activity. The basic version disables Reshade if it detects it.
If you can't see the Global Illumination settings (since the video is only 1080p), write a comment, and I'll write them there. But I suggest you just play around with the settings until you make it look like my game or similar.
Enjoy!