Quote Originally Posted by Dopple View Post
The up key works perfectly fine in other programs, and no I don't have any of those
I've only ever experienced such an issue when a game runs inside a VM (eg parallels) due to there being issues with relative mouse cursor positioning. Basically what happens in those situations is that the VM environment has the mouse "center locked" so it's not getting floating point values, solid 1's when the mouse is moved in such direction, which gives some hilariously awful camera movement in 45 degree angles only.

At any rate the first thing I'd do is probably reset the keybinds. You can look in ffxiv.cfg as well under GamePad Settings and see if something is set there that isn't supposed to be.