• Slighty altered color palette (less yellow) for a more cinematic feel (and a deeper blue sky on sunny days).
• Darker shadows & improved ambient light (e.g. darkens places which are not well lit) for a more realistic feel.
• Sharper textures. This preset reduces the blurriness FFXV has due to antialiasing.
• Higher luminance of the sun: the sun feels more powerful and objects which are illuminated by the sun are brighter.
• The nights are slighty darker,  light sources during nights appear slighty brighter. 
• Enhanced reflections on objects like rocks.
• You can toggle the border with F3 in case you don't like it.
  

• Download the zip file under the files section and extract its content into the FFXV games folder (located at ./Steam/steamapps/common/FINAL FANTASY XV). 
• For the activation of this preset you need to put the game in borderless mode. Press "Shift + F2" to open the Reshade Menu. IMPORTANT: you need to "Alt + Tab" out of the game and return to it in order to access your mouse while the Reshade menu is active! 
• Now activate the preset by selecting the "Pure Light.ini" from the drop down list.
• Now the preset should be active and can be toggled with the "Scroll Lock" Key.
• I recommend setting "filtering" to low in the graphics settings. My full graphics settings are listed below under "performance".
  

The hit on performance depends on the hardware. On my system (GTX 1080, Intel i7 6700, 16 GB Ram) the fps-hit varies between 5 and 15 fps. Here are my graphics settings for FFXV with which I created the preset and took the screenshots: 

• Resolution: 100%
• Assets: On (primary because of the increased grass density that comes with the texture pack)
• Model LOD: High
• TRAM: Highest
• Anisotropic Filtering: High
• Geomapping: Off  (there are only a few places where I even notice the effect so I turned it off for better performance)
• Lighting: High (Highest doesn't look better IMO but slightly decreases performance)
• Shadows: Highest for the best look. But setting Shadows to High instead of Highest can increase fps drastically in some areas.
• Ambient Occlusion: High
• Anti-aliasing: TAA
• Motion Blur: Off
• Filtering: Low (this just adds filters to the image which I don't like and which costs fps)
• NVIDIA HairWorks: On
• NVIDIA VXAO: Off (some places appear too dark with VXAO and this preset activated at the same time)  
• NVIDIA TurfEffects: On (I really like the look of the grass with this effect activated)
• NVIDIA ShadowLibs: Off