Add this to your ShooterInput.ini at the [ShooterGame.SGPlayerInputPawn] category (at the bottom):

Bindings=(Name="F10",Command="PostProcessAAType 0 | BloomSize 0 | FogDensity 0 | ColorGrading 2 | SetMaxMipLevel 16 | RawInputUpdateTest true",Control=False,Shift=False,Alt=False,bIgnoreCtrl=False,bIgnoreShift=False,bIgnoreAlt=False)

it disables post process AA, bloom, fog, makes the textures brighter, enables raw input and changes colorgrading to 2 (default 0). Press F10 everytime you join on a server the first time you have started the game to activate the settings.