Minimizing VRAM useage.

Having trouble figuring out how to minimize VRAM usage. I am using a 8GB card and when I package my project it shows that it the project will have to use 5.3ish GBs to be ran.

It could be because of the detail of the assets that are in my project but I have seen ways to decrease the Texture Scalability in the Scalability file in the Config file but I feel like it is not that easy.

Any help would be awesome!

Details:

Working on a Windows Mixed Reality Project in UE4 4.21.2.