Essential Material Concepts?

I’ve been going over some of the Essential Material Concepts which seems to focus more on how to construct a material or how to import textures with suggested resolution but little or no information in one place as to how the UE4 engine manages output of say a 4K based material onto an object that does not need that level of detail say on a door knob.

At the moment I’m operating on the assumption that UE4, as a closed edit environment, can be used to optimize the output to a much more reasonable resolution but still maintain the overall quality of the material as say going from a 4K master to a 1K output?

Using max resolution in UE4 is cool but what are some of the ways and means of being able to output a optimized and reasonable result to the final package?

You can open the texture.uasset in browser and set the dither at the top from 0 to 1 and that will make a 4k texture render into 2k, or set it it 2 and divide the overall res to 1k. Overall,rendering master textures at 4k for objects like a doorknob is pure over kill and will always result in some sort of resizing and reporting textures as optionally could be done in this case.