This True HDR mod is a real work of art. It simulates the HDR effect even better than the actual in-game HDR engine, which can be clearly seen on the HDR screens.
In any case, this mod will make your game look absolutely fantastic with all the added colors and details. Of course, you'll be experiencing some FPS drops due to higher demand on your hardware, but reportedly the drop is only slightly over 10%.
If you really care about your game look good and can sacrifice a bit of framerate, then this Reshade mod is a must-have.