Unreal Engine 4 Tutorial: Menu (english)
How to create a basic menu. Here are some more graphic console commands:
sg.AntiAliasingQuality (1-4)
sg.EffectsQuality (1-4)
sg.PostProcessQuality (1-4)
sg.ShadowQuality (1-4)
sg.TextureQuality (1-4)
sg.ViewDistanceQuality (1-4)
r.ScreenPercentage (1-100)
r.MaterialQualityLevel (0-1)