I decided to get Stormblood on my PS4 since the upcoming Pro patch will have it running better than on my PC. The only downfall was the terrible load times, so I decided to move the game onto an external. It's a Samsung T3 SSD, so I thought I should see massive improvements without having to go through the hassle of replacing the drive in the PS4.

Turns out that FFXIV has a unique problem in regards to moving the game onto an external drive.

It will only allow you to transfer 13.22gb of the game onto the external drive. The rest remains on the system, located under "other" in application data and is inaccessible.

I am not sure if Square-enix is aware of this since external drive support is fairly new but it kind of sucks that the majority of the game is stuck on the system.