I went through this list of commands for the Unreal 4 engine and added a few things. I'm really liking how the game looks and plays now. YMMV.
http://kosmokleaner.de/ownsoft/UE4CVarBrowser.html I found that the following command eliminates the shadows, so I strongly recommend against adding it to Engine.ini: r.BloomQuality=0
My Engine.ini file now looks like this:
[/Script/Engine.LocalPlayer]
AspectRatioAxisConstraint=AspectRatio_MaintainYFOV
[SystemSettings]
r.SceneColorFringeQuality=0
r.Tonemapper.GrainQuantization=0
r.Tonemapper.Quality=0
r.DefaultFeature.Bloom=0
r.DefaultFeature.MotionBlur=0
r.DepthOfField.MaxSize=0
r.DepthOfFieldNearBlurSizeThreshold=0
r.DepthOfFieldQuality=0
r.LensFlareQuality=0
r.MotionBlurQuality=0
r.TranslucencyVolumeBlur=0
r.ScreenPercentage=100
r.DefaultFeature.AntiAliasing=0
My Scalability.ini file still looks like this:
[PostProcessQuality@3]
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0