Hate to copy paste myself, but as stated in my original post
Things I have tried:
Turning off game mode in windows
Making sure my nvidia settings are set to use GPU in 3D settings instead of Automatic
A clean boot by disabling all start up programs (and restarting my computer, only launching FFXIV upon startup)
Reinstalling DirectX
Deleting cfg file in my games folder
Various resolutions on start up

Same error message every time