Without Post Processing enabled, brake lights on some cars in Asseto Corsa are barely visible. This shader does not do much except for some tonemapping. All other effects are deactivated in the PP filter. This is enough to make the brake lights visible while not losing many FSP.
This might also be a good PP filter for people using VR while just meeting the minimum requirements for VR.
Extract contents to:
Select the "Minimum" filter in the Post Processing settings.