Hi! As long as SE asked to make a thread for each user with system issues, I'm here doing mine.
First of all, I'm sorry if my english is not the best, but is not my main language.

Here I go:
I'm having 3 issues related with DirectX:

1) Game crashes with message window "A fatal DirectX error has occurred (11000002)"

2) An unexpected error has occurred. Exiting FINAL FANTASY XIV.
ffxiv_dx11.exe+2FC6DA
ffxiv_dx11.exe+2FE98D
ffxiv_dx11.exe+18D1C2
KERNELL32.DLL+16FD4
ntdll.dll+4CEC1

3) Unexpectedly I have issues on textures, like all this: https://imgur.com/a/ufHZ0Z3

I'm not using overlays, I tried reinstalling windows and even FFXIV but the issues continue.
My pc has windows 10 pro, mother MSI x370 gaming pro carbon, Graphic Card AMD Radeon RX 580 8GB, Proccessor AMD Ryzen 5 3600x 3.80 GHz and 16 GB Ram.
System requirement is even better than recommended to play, but I have this 3 errors suddenly and randomly when playing.