Lighting Troubleshooting
If you're using the ingame Sky you may notice some shadow Artifacts in your editor, this is because we're using Mesh Distance Fields.
The easy solution is to disable Cast Shadows in your SkyLight. However, this will only effect things in the editor.
If things look bad ingame as well you also need to adjust the Distance Field Resolution Scale on each effected mesh.
UE4 Documentation: Mesh Distance Fields
If you are using the Session ingame sky you may notice some objects glow at certain times of the day.
This is caused by the LPV Dynamic Global Illumination, there are two main ways to adjust this.
If you want to be able to control the effect you can use the GIReplace node in your Materials.
A value of 0.2 should work for most objects but you can always adjust it or set it to 0 if needs be.
I'd recommend adding this to your Master Material so that it can be easily adjusted in each Material Instance.
Another option is to disable the Global Illumination completly with a Post Processing Volume.
As you can see I have set the priority to 1 to make sure that it works alongside the ingame Post Processing.
