Quote Originally Posted by GodandVoid View Post
1. Open your controller settings on the FFXIV Library steam page (On the right, with a picture of a controller, near the add to favourites button and such)
2. Enable Steam Input
3. Select Edit Layout
4. Go to Joystick then click the top most cog. Here you can manually adjust the deadzone of the joystick you selected by selecting deadzones on the left
5. Scroll down to where it says "Deadzone Source" and change it to Custom, then below change the Deadzone Shape to Cross
6. Play around with the sliders until satisfied, I find 15 - 100 works pretty well.
7. Repeat for the left Joystick

The controller settings can be a bit finicky at times, if for some reason some options aren't showing, try closing the settings and trying again.
You, friend, are a scholar and a saint, thank you very much! that's much better than before. I'll probably tinker with it and the stick sensitivity til it feels just right, but this is definitely a major improvement!