That explains why I hadnt had any issues from the beginning. @DEDRICK had come up with a .ini file for the original alpha that looked something like this, with me adding in supersampling on my own.
[/Script/Engine.RendererSettings]
r.ForceLOD=-1 ;Override LODs, Does it get rid of popi n? Testing still, should be max detail geo
r.Tonemapper.Sharpen=1 ;1 is Max
r.TemporalAACurrentFrameWeight=0.32 ;0.04 Default, Lower values blur and cause ghosting, higher values are sharper but cause more flickering
r.TemporalAASamples=4 ;8 default
r.TemporalAACatmullRom=1 ;0 default, 1=sharper TAA
r.PostProcessAAQuality=6 ;6 is TAA Max
r.SkeletalMeshLODBias=0 ;max quality characters
r.ViewDistanceScale=1 ;1 default, increases rendering distance of objects
r.LightFunctionQuality=2
r.ShadowQuality=5 ;5 is max and default
r.Shadow.CSM.MaxCascades=4
r.Shadow.MaxResolution=4096 ;4096 max static resolution
r.Shadow.MaxCSMResolution=4096 ;4096 max dynamic resolution
r.Shadow.RadiusThreshold=0
r.Shadow.DistanceScale=1.0 ;static shadow render fade distance
r.Shadow.CSM.TransitionScale=2.0 ;1 default, 2 max, increases dynamic object shadow fade distance
r.Shadow.PreShadowResolutionFactor=1.0
r.DistanceFieldShadowing=1
r.DistanceFieldAO=1
r.HBAO.Enable=1 ;Horizon Based AO Enabled but not sure if works
r.VolumetricFog=1
r.VolumetricFog.GridPixelSize=8
r.VolumetricFog.GridSizeZ=128
r.VolumetricFog.HistoryMissSupersampleCount=8
r.LightMaxDrawDistanceScale=1
r.MotionBlurQuality=0 ;4 Cinematic, 0 off
r.AmbientOcclusionMipLevelFactor=0.4
r.AmbientOcclusionMaxQuality=100
r.AmbientOcclusionLevels=1
r.AmbientOcclusionRadiusScale=1.0
r.DepthOfFieldQuality=3 ;4 is cinematic quality but rough on FPS when suppressed, DoF cannot be disabled it's forced, 3 is between cine and Very High
r.RenderTargetPoolMin=1000
r.LensFlareQuality=3
r.SceneColorFringeQuality=0 ;Chromatic Abberation, 0 off
r.SceneColorFringe.Max=0
r.DefaultFeature.AutoExposure=0 ;Auto Exposure off,fixes strange light issues
r.EyeAdaptationQuality=2 ;Auto Exposure, do not set to 0, game goes super dark
r.BloomQuality=5 ;5 default
r.FastBlurThreshold=100
r.Upscale.Quality=3
r.Tonemapper.GrainQuantization=1
r.LightShaftQuality=1
r.Filter.SizeScale=1
r.Tonemapper.Quality=5
r.Streaming.MipBias=0 ;max resolution textures
r.MaxAnisotropy=16 ;max aniso
r.Streaming.LimitPoolSizeToVRAM=1
r.Streaming.PoolSize=8192 ;3000 default WARNING Uses up to 8GB of VRAM
r.Streaming.MaxEffectiveScreenSize=0
r.TranslucencyLightingVolumeDim=64
r.RefractionQuality=2
r.SSR.Quality=3 ;Screen space reflection, 4 is max
r.SceneColorFormat=3 ;4 enables RGBA
r.DetailMode=2
r.TranslucencyVolumeBlur=1
r.MaterialQualityLevel=1 ; High quality
r.SSS.Scale=1 ;Subsurface Scattering
r.SSS.SampleSet=2
r.SSS.Quality=1
r.SSS.HalfRes=0
r.EmitterSpawnRateScale=1.0
r.ParticleLightQuality=2
r.ScreenPercentage=150