INSTALLATION
1. Go to your FALLOUT 4 Base folder and drop the "Data" Folder inside. 

2. For now, you have to edit the Fallout4.ini file in your ../my games/Fallout4/ folder.  Add/modify the following edit:

[Archive]
sResourceDataDirsFinal=STRINGS\, TEXTURES\

ALL DONE! 
ENJOY YOUR 4K HD TEXTURES