>>268590810
Since it's an unreal game this should help a bit.

Add this to the engine.ini file 
[SystemSettings]
r.DefaultFeature.AntiAliasing=2
r.TemporalAACurrentFrameWeight=0.2
r.TemporalAASamples=16
r.TemporalAASharpness=1.0
r.Tonemapper.Sharpen=1.5

and this to scalibility.ini
[PostProcessQuality@3]
r.DefaultFeature.AntiAliasing=2

and in the gameusersettings.ini 
sg.PostProcessQuality=3