Replace the contents of this file with the below: %localappdata%\TslGame\Saved\Config\WindowsNoEditor\Engine.ini

it should give you a few extra frames, also run the game in full-screen mode to reduce input lag.

[Core.System]
Paths=../../../Engine/Content
Paths=%GAMEDIR%Content
Paths=../../../Engine/Plugins/OceanPlugin/Content
Paths=../../../Engine/Plugins/Mutable/Content
Paths=../../../Engine/Plugins/Runtime/Coherent/CoherentUIGTPlugin/Content
Paths=../../../Engine/Plugins/RoadEditor/Content
Paths=../../../Engine/Plugins/2D/Paper2D/Content
Paths=../../../Engine/Plugins/Wwise/Content

[/script/engine.renderersettings]
r.EmitterSpawnRateScale=0.75
r.DepthOfField.MaxSize=0
r.DefaultFeature.MotionBlur=False
r.DefaultFeature.Bloom=False
r.DefaultFeature.AutoExposure=False
r.DefaultFeature.AmbientOcclusion=False
r.DefaultFeature.AmbientOcclusionStaticFraction=False
r.BloomQuality=0
r.LensFlareQuality=0
r.DepthOfFieldQuality=0
r.ReflectionEnvironment=0
r.SceneColorFringeQuality=0
r.ReflectionEnviroment=0
r.SSR.Quality=0
r.RefractionQuality=0
r.SSR=0
r.SSS.Scale=0
r.SSS.SampleSet=0
r.SwitchGridShadow=0

[/Script/TslGame.TslEngine]
FrameRateCap=0