I've been using a very old config. It works great for me at least. I removed however the fog setting, due to it making the game veryyyyy dark.

I hope, maybe someone can help me in removing/adding in commands to improve? Maybe a new setting to remove fog that wont make the game very dark? I don't know. xp

Here is the config:

[/script/engine.engine]
bSmoothFrameRate=False
MinSmoothedFrameRate=5
MaxSmoothedFrameRate=144
bUseVSync=False
bOverrideVSync=False
SmoothedFrameRateRange=(LowerBound=(Type="ERangeBo undTypes::Inclusive",Value=5),UpperBound=(Type="ER angeBoundTypes::Exclusive",Value=144))
MaxPixelShaderAdditiveComplexityCount=128
MaxES2PixelShaderAdditiveComplexityCount=45
bDisablePhysXHardwareSupport=True
UseMinimalNVIDIADriverShaderOptimization=False
bPhysXEnabled=False
IdealLightMapDensity=0.02
MaxLightMapDensity=0.05
TimeBetweenPurgingPendingKillObjects=30
r.EmitterSpawnRateScale=0
FX.MaxCPUParticlesPerEmitter=0
FX.MaxGPUParticlesSpawnedPerFrame=0

[/Script/Engine.GarbageCollectionSettings]
r.EmitterSpawnRateScale=0
r.SeparateTranslucency=False
r.DefaultFeature.Bloom=False
r.DefaultFeature.AmbientOcclusion=False
r.DefaultFeature.AmbientOcclusionStaticFraction=Fa lse
r.DefaultFeature.MotionBlur=False
r.DefaultFeature.LensFlare=False
r.DefaultFeature.AntiAliasing=0
PerfIndexValues_ResolutionQuality=50 50 50 50
r.MSA*****mpositingSampleCount=1
r.SkeletalMeshLODBias=-1
r.LightFunctionQuality=0
r.ShadowQuality=0
r.Shadow.CSM.MaxCascades=0
r.Shadow.MaxResolution=32
r.Shadow.RadiusThreshold=0.24
r.Shadow.DistanceScale=0.1
r.DepthOfFieldQuality=0
r.RenderTargetPoolMin=200
r.Upscale.Quality=0
r.MaxAnisotropy=0
r.TranslucencyLightingVolumeDim=1
r.SceneColorFormat=3
r.ParticleLightQuality=0
r.Color.Max=0.80
r.Color.Min=-0.015
r.Color.Mid=1.00

[WindowsApplication.Accessibility]
StickyKeysHotkey=False
ToggleKeysHotkey=True
FilterKeysHotkey=True
StickyKeysConfirmation=True
ToggleKeysConfirmation=True
FilterKeysConfirmation=True


[/Script/Engine.LocalPlayer]
AspectRatioAxisConstraint=AspectRatio_MaintainYFOV