This is a paid asset, but now you can download Automatic Quality FPS – Unity Auto-quality for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
For more detail this asset from the Unity Asset Store: Click Here
Automatic Quality FPS – Unity Auto-quality v1.0.3 (Latest version)
“If possible, please buy the package to support the developer”
Automatically adapt image quality according to frames per second (FPS) on all devices.
Easy, just drag the prefab in your scene and it will choose the best quality level at runtime.
Script is changing the level quality dynamically, during gameplay.
Added the possibility to stay on the most used quality level after some time.
All code is fully commented / explained.
* Boat scene not included
Automatic quality FPS is currently used in Douarnenez VR app store .steampowered.com/app/656770/Douarnenez_VR/