Engine ini edits to remove DoF/Blur etcs
AppData\Local\CrashBandicoot4\Saved\Config\WindowsNoEditor
engine.ini

[SystemSettings]
r.DepthOfFieldQuality=0 (removes ugly DoF)
r.MaxAnisotropy=16 (Anisotropy x16)
r.DetailMode=2
r.BloomQuality=0 (removes the really really bad Bloom)
r.Tonemapper.Quality=0 (Vignette effects)
r.SceneColorFringeQuality=0 (Chromatic stuff)
r.MotionBlur.Max=0 (removes blur if game has it)
r.MotionBlurQuality=0
r.DefaultFeature.AntiAliasing=0 (removes TAA if you dont want it)
r.PostProcessAAQuality=0 (same as above)
r.DefaultFeature.MotionBlur=0

Also if You really really want to go ham I use this for NMH3 and Kena but A lot of these settings probably do things that arent even in this game Id recommend not using this one unless you really know what all of these do etc. Will increase GPU usage alot. and some of these might even make the game look worse a lot of settings are generally game per game bases
[SystemSettings]
r.MaxAnisotropy=16
r.DepthOfFieldQuality=0
r.Streaming.Boost=4
r.Streaming.HLODStrategy=0
r.Streaming.DefragDynamicBounds=1
r.Streaming.MipBias=0
r.bForceCPUAccessToGPUSkinVerts=1
r.FastVRam.EyeAdaptation=1
r.ViewDistance=5
r.ViewDistanceScale=4
r.LandscapeLODDistributionScale=3
r.LandscapeLOD0DistributionScale=3
r.StaticMeshLODDistanceScale=0.01
grass.CullDistanceScale=4
grass.DisableDynamicShadows=1
foliage.LODDistanceScale=4
foliage.ditheredLOD=0
foliage.MinimumScreenSize=0.00000001
foliage.MaxOcclusionQueriesPerComponent=128
foliage.MinInstancesPerOcclusionQuery=65536
grass.DensityScale=1.0
foliage.DensityScale=1.0
r.HLOD=1
r.HLOD.DistanceScale=3
r.EmitterSpawnRateScale=2.0
r.MipMapLODBias=0
r.MaxQualityMode=1
r.DetailMode=2
r.MaterialQualityLevel=1
r.SkeletalMeshLODBias=-2
r.SkeletalMeshLODRadiusScale=0.03
r.LandscapeLODBias=-3
r.Fog=1
r.FogDensity=0.02
r.FogStartDistance=6
r.TrueSkyQuality=1
r.SkyLightingQuality=1
r.VolumetricCloud=2
r.VolumetricCloud.SkyAO=1
r.VolumetricCloud.SkyAO.Filtering=1
r.VolumetricRenderTarget.Mode=1
r.SkylightIntensityMultiplier=0.4
r.SkyAtmosphere=1
r.SupportSkyAtmosphere=1
r.SkyAtmosphere.LUT32=1
r.SkyAtmosphere.FastSkyLUT=0
r.SkyAtmosphere.MultiScatteringLUT.HighQuality=1
r.SkyAtmosphere.AerialPerspectiveLUT.FastApplyOnOpaque=0
r.SkyAtmosphere.TransmittanceLUT.UseSmallFormat=0
r.SkyAtmosphere.AerialPerspectiveLUT.Depth=96
r.SkyAtmosphere.AerialPerspectiveLUT.DepthResolution=16.0
r.SkyAtmosphere.SampleCountMin=64.0
r.SkyAtmosphere.SampleCountMax=128.0
r.SkyAtmosphere.DistanceToSampleCountMax=128
r.RefractionQuality=3
r.LightFunctionQuality=1
r.AllowLandscapeShadows=1
r.AmbientOcclusionLevels=2
r.AmbientOcclusionMaxQuality=100
r.AmbientOcclusionRadiusScale=0.03
r.HighQualityLightMaps=1
r.LensFlareQuality=3
r.ShadowQuality=4
r.Shadow.CSM.MaxCascades=10
r.Shadow.MaxResolution=4096
r.Shadow.MinResolution=4096
r.Shadow.MaxCSMResolution=4096
r.Shadow.MinCSMResolution=4096
r.Shadow.RadiusThreshold=0.001
r.Shadow.CSM.TransitionScale=6
r.SSR.Quality=4 (SSR Reflections)
r.SSR.MaxRoughness=1
r.SSS.Scale=1
r.SSS.SampleSet=2
r.SSGI.Quality=4
r.DefaultFeature.AntiAliasing=0
r.PostProcessAAQuality=0
r.ScreenPercentage=120 (SSAnti-Alisaing will increase GPU usage)
r.BloomQuality=0 (removes Bloom Change through 1-3 to increase quality of bloom)
r.EyeAdaptationQuality=3
r.Color.Mid=0.35
r.Tonemapper.Quality=0
r.Tonemapper.Sharpen=0.20
r.DefaultFeature.MotionBlur=0
r.FastBlurThreshold=0
r.SceneColorFringe.Max=0
r.SceneColorFringeQuality=0
r.MotionBlur.Max=0
r.MotionBlurQuality=0
r.Tonemapper.GrainQuantization=0