This video goes through the process of how to change Unreal Engines Lightmaps Resolution. This will allow Shadow Resolution to be much higher resulting in better looking baked lighting in your Unreal Projects.
In this quick tutorial Kemal will show you how to change your Lightmap Resolution in Unreal Engine. This handy fix can change your shadow quality from bad pixelated shadows to clean smooth shadows when baking your static lighting.
Check out some of the other great tutorials on CGHero.