If you're running an NVidia GPU follow the whole procedure, if not, proceed to In game changes.
NVidia Users:
If you notice more than one .exe files on step 4, make changes mentioned on steps 5 & 6 on all .exe files of the specific game.
In game changes:
- Options -> Video options -> Advanced Video
- Light and shadow options -> Cache spot shadows OFF & Cache sun shadows OFF
- Post process options -> Anti-Aliasing Filmic SMAA 1x & Filmic Strength ~50%
The rest settings are up to your personal preferences and your computer's performance.
RESTART the game after applying (saving) settings!