Good afternoon and thank you for the reply.

Have you tried reinstalling the drivers? If you have not done so already, could you try reinstalling Direct X? What was happening at the time of the crash? Did you have any program open in the background? Were you loading the FFXIV launcher or were you trying to access a certain area of FFXIV? You mention that you were able to run the game without it crashing for a little bit. Were there any differences in what was running on the computer at the time the game crashed versus when it is was not crashing?

Hope to see you online!