Strangely enough, the next question down in the list, had this answer:
https://answers.unrealengine.com/questions/1051146/view.html
Does that help?
Look closely at the surface of the buildings
flickering, aliasing, and moire patterns
I wanna reduce these noise things
The noise of this image has already been reduced by high-resolution rendering
The problem is more severe in low resolution
Texture mipmap or aa problems I guess…Also, this is generated by Instanced meshes method.
Or I use small technic making emissive material using Min, Max to bound emissive color range on the texture
Are these things possible to cause this problem? Or settings??
Check this similar problem
plz help
Did you try it?
I don’t know
Anyway, thank you!