Attempted fixes
1. Reinstalled DirectX
2. Reinstalled FFXIV
3. Reinstalled Graphics Drivers
4. Attempted DirectX 9 vs 11

the updates began directly after the shadowbringers update that's the only thing of my computer that's changed since before the crashes. It seems to be completely random it's happened while crafting, while on a mount in il Meg, it's happened in dungeons, it's happened in raids, and it's happened while just standing there