Thank you for the reply RoseOfTheRaven.

You mentioned that you were able to play for a few hours before it crashed again after deleting all FFXIV files. When it did crash, what exactly were you doing? Did it crash during a load screen again, or just while playing the game?

You may want to try a clean boot. Simply open the task manager and select the 'Start up' tab. Disable everything here and restart the PC. This will make sure that no background processes are interfering with the game.

Make sure to disable any overlays (Geforce Experience, Discord Overlay, etc.) that might be present as well.

If you switch to DirectX 9 mode in the Config menu of the Launcher, does the same error occur?

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!