You can modfy unreal engine game  settings windows+r type %appdata% go to local and search the game name click saved then config after that windows no editor and click gameuser settings  the text should be something similar to this 

sg.ResolutionQuality=50.000000

sg.ViewDistanceQuality=0

I recommend making the resolution quality to 30 or 50 idk depending on your gpu im not the developer of the game