The results were astonishing. New quests appeared on their map, leading them to hidden areas and secret storylines. The graphics improved, with more detailed textures and lighting effects. The game ran smoother, with fewer glitches and bugs.
Keep the official DLC as BA2 files. Do not unpack them. Let your mods (which are usually loose files or their own BA2s) overwrite them. fallout 4 dlc files download better