Those random DirectX crashes have been an issue for some people after every patch since the game was launched. For some people it is actually only certain areas or instances while for others it seems to be related to the activity. Some people had multiple installations of FF 14 on different harddrives and some of them worked perfectly while others had the DirectX crashes. After years of having them sporadically with 2 different computers I am quite certain that the issue lies in most cases not in your hardware and instead with the game itself.