C:\Users\XXX\AppData\Local\HLL\Saved\Config\WindowsNoEditor\GameUserSettings.ini
In the [scalabilityGroups] change everything to -1 just like that:
[ScalabilityGroups]
sg.ResolutionQuality=100.000000
sg.ViewDistanceQuality=-1
sg.AntiAliasingQuality=-1
sg.ShadowQuality=-1
sg.PostProcessQuality=-1
sg.TextureQuality=-1
sg.EffectsQuality=-1
sg.FoliageQuality=-1
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Written by tomcioMalina