Yet another DirectX11 error

[Delaene]

Hello, i'm a new player of FFXIV and since the first time i tried launching the game with DirectX11 i've encountered this error:
Image
My GPU fully supports DX11 (it's an AMD Radeon RX580) and this is the first game which gives me this kind of problem. If it can help, i've already tried setting ffxivboot.exe, ffxivlauncher.exe, ffxiv.exe and ffxiv_dx11.exe to Win7+administrator compatibility mode.

If i may, please allow me to say i want to play with DirectX11, and asking me to try playing with DX9 won't solve the problem (it works, i just wanna play the game with better graphics with DX11 and there's no reason this gpu shouldn't run it)

Thanks in advance