Unreal Engine 4

DefaultDeviceProfiles.ini

[/Script/Engine.TextureLODSettings]
TextureLODGroups=(Group=TEXTUREGROUP_World,MinLODSize=1,MaxLODSize=8192,LODBias=0,MinMagFilter=aniso,MipFilter=point,NumStreamedMips=0,MipGenSettings=TMGS_Sharpen3)
TextureLODGroups=(Group=TEXTUREGROUP_WorldNormalMap,MinLODSize=1,MaxLODSize=8192,LODBias=0,MinMagFilter=aniso,MipFilter=point,NumStreamedMips=0,MipGenSettings=TMGS_SimpleAverage)
TextureLODGroups=(Group=TEXTUREGROUP_WorldSpecular,MinLODSize=1,MaxLODSize=8192,LODBias=0,MinMagFilter=aniso,MipFilter=point,NumStreamedMips=0,MipGenSettings=TMGS_SimpleAverage)

High

[TextureStreaming]
PoolSizeVRAMPercentage=0

[/Script/Engine.RendererSettings]
r.MaxAnisotropy=16
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0
r.Tonemapper.GrainQuantization=0
r.TemporalAACurrentFrameWeight=0.1

[/Script/Engine.RendererSettings]
r.Streaming.PoolSize=0
r.MaxAnisotropy=16
r.DepthOfFieldQuality=0
r.LensFlareQuality=0
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0
r.Tonemapper.GrainQuantization=0
r.Tonemapper.Quality=1

r.Tonemapper.Sharpen=2

r.ScreenPercentage=75
r.TemporalAA.Upsampling=1
r.TemporalAACurrentFrameWeight=0.5

[/Script/Engine.RendererOverrideSettings]
r.MaxAnisotropy=16
r.DepthOfFieldQuality=0
r.LensFlareQuality=0
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0

r.ScreenPercentage=75
r.TemporalAA.Upsampling=1
r.TemporalAACurrentFrameWeight=0.5

[SystemSettings]
r.MaxAnisotropy=16
r.DepthOfFieldQuality=0
r.LensFlareQuality=0
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0

r.ScreenPercentage=75
r.TemporalAA.Upsampling=1
r.TemporalAACurrentFrameWeight=0.5

r.PostProcessAAQuality=4
r.TemporalAASamples=8
r.TemporalAA.Algorithm=1

r.Tonemapper.Quality=1
r.Tonemapper.Sharpen=2

r.ViewDistanceScale=10
foliage.LODDistanceScale=10
r.StaticMeshLODDistanceScale=0.1
r.SkeletalMeshLODBias=-5
r.LandscapeLODBias=-5

r.Shadow.DistanceScale=2
r.Shadow.MaxCSMResolution=8192

r.Streaming.FullyLoadUsedTextures=1

remove

r.ShadowQuality=0 ;no shadows
r.AmbientOcclusionLevels=0 ;no AO
r.SSR=0 ;no Screen Space Reflections
r.Fog=0 ;no fog
r.LightShaftQuality ;no light shafts

ultra-low

[SystemSettings]
r.MaxAnisotropy=2
r.DepthOfFieldQuality=0
r.LensFlareQuality=0
r.MotionBlurQuality=0
r.SceneColorFringeQuality=0
r.PostProcessAAQuality=0
r.Tonemapper.Quality=0
r.Fog=0
r.SSR=0
r.AmbientOcclusionLevels=0
r.ShadowQuality=0
r.BloomQuality=0
r.MipMapLODBias=2
r.LandscapeLODBias=2
r.StaticMeshLODDistanceScale=2
r.ViewDistanceScale=0.6
foliage.LODDistanceScale=0.6

[TextureStreaming]
r.Streaming.PoolSize=2048

accurate velocities from vertex deformation
https://andrewdowell.blogspot.com/2018/06/accurate-velocities-from-vertex.html

console commands
https://digilander.libero.it/ZioYuri78/

TAA stuff
https://forums.unrealengine.com/t/sharp-temporal-aa/82900
https://forums.unrealengine.com/t/gen-5-temporal-anti-aliasing/152107

https://gpuopen.com/learn/ue-fsr2/

r.TemporalAA.Algorithm

• 0 = Gen 4 TAAU (Default)
• 1 = Gen 5 TAAU

r.TemporalAA.Upsampling

• 0 = Spatial (Default)
• 1 = Spatial & Temporal

---

r.TemporalAA.HistoryScreenPercentage

• 100 = 100%, Standard Resolution Temporal AA
• 200 = 200%, SuperSampled Temporal AA

---

r.TemporalAACurrentFrameWeight

• 0.04 (Default)
  Weight of current frame's contribution to the history.
  Low values cause blurriness and ghosting.
  High values are sharper but fail to hide jittering/aliasing.

r.TemporalAAFilterSize

• Size of the filter kernel. (1.0 = smoother, 0.0 = sharper but aliased).

r.TemporalAASamples

• Number of jittered positions for temporal AA (4, 8=default, 16, 32, 64).

---

r.VertexDeformationOutputsVelocity

• Enables materials with World Position Offset and/or World Displacement to output velocities during velocity pass even when the actor has not moved. This incurs a performance cost and can be quite significant if many objects are using WPO, such as a forest of trees - in that case consider r.BasePassOutputsVelocity instead.

r.BasePassOutputsVelocity

• Enables rendering WPO velocities on the base pass.
• 0: Renders in a separate pass/rendertarget, all movable static meshes + dynamic.
• 1: Renders during the regular base pass adding an extra GBuffer, but allowing motion blur on materials with Time-based WPO

r.BasePassForceOutputsVelocity

• Force the base pass to compute motion vector, regardless of FPrimitiveUniformShaderParameters.
• 0: Disabled (default)
• 1: Enabled

https://docs.unrealengine.com/5.0/en-US/fshadercache-in-unreal-engine/

r.DefaultFeature.AntiAliasing=2
r.PostProcessAAQuality=6

r.TemporalAA.Algorithm=1
r.TemporalAA.Upsampling=1
r.TemporalAA.HistoryScreenPercentage=200
r.TemporalAACurrentFrameWeight=0.08
r.TemporalAAFilterSize=1.0
r.TemporalAASamples=8
r.TemporalAACatmullRom=0

r.BasePassOutputsVelocity=1
r.BasePassForceOutputsVelocity=1

r.AmbientOcclusion.Compute

• 0: PixelShader (default)
• 1: Use ComputeShader if possible, otherwise fall back to '0'

r.PostProcessing.PreferCompute

• Will use compute shaders for post processing where implemented.

r.D3D11.UseAllowTearing=1
r.D3D12.UseAllowTearing=1

r.AMDD3D11MultiThreadedDevice=true

rhi.MaximumFrameLatency=4
rhi.SyncInterval=1
rhi.SyncSlackMS=8
r.GTSyncType=2
r.OneFrameThreadLag=1
r.Vsync=1

r.HZBOcclusion=2
r.FinishCurrentFrame=1

r.Streaming.UseFixedPoolSize=1
r.Streaming.PoolSize=0
r.Streaming.PoolSizeForMeshes=0
r.Streaming.FullyLoadUsedTextures=1
r.Streaming.LimitPoolSizeToVRAM=0
PoolSizeVRAMPercentage=0

D3D11.ZeroBufferSizeInMB=128
D3D12.ZeroBufferSizeInMB=128

Game launch options, to partial fix animation stutters:

-usefixedtimestep -fps 60

https://dev.epicgames.com/documentation/en-us/unreal-engine/low-latency-frame-syncing?application_version=4.27

https://dev.epicgames.com/documentation/en-us/unreal-engine/texture-streaming-configuration-in-unreal-engine