GFX Tools Free for PUBG

GFX Tool is a free utility launcher for a specific game where you can fully customize the game graphics to get beautiful pictures and smooth gameplay

Any battle royal game player can customize Resolution, enable HDR graphics, unlock the FPS limit, and tweaks other options like Shadows, Textures quality, MSAA, with unique features like Simple Shaders, Potato graphics and much more.

Please see screenshots for more info