Nuka World Size
Nuka World is huge download.
When you go to download the new DLC, you'll need to have 5GB+ of free space on your hard drive. On the PS4, the Nuka World DLC is 5.3GB.
That's huge for a piece of DLC and much bigger than Bethesda's two previous releases, Vault-Tec Workshop and Contraptions Workshop.
Something to keep in mind if your hard drive is getting full or if your wireless internet is slow. It might be wise to plug your ethernet cable directly into your computer, Xbox One or PlayStation 4.