Thank you, I guess that makes sense. I know nothing about GPU memory. 
Is there a way to override DXT1 to test other compression formats/settings, or is DXT1 the only one available? I also noticed in the Unreal Kite Demo files that were released, they use DXT5 instead of DXT1. Other than the size, what is the difference between the two?
I’ve been looking at this : Texture Support and Settings | Unreal Engine Documentation
I guess what I’m asking, my main question, how do I bring down the amount of memory space when using 4k textures? What other GPU compression options do I have?
Can I reduce memory footprint by reducing/disabling the 13mips unreal creates?
Thanks,
N!K