Client Crash on changing resolution

I am having this problem as well and am also experiencing occasional shader crashes when switching levels. I have a NVidia 1080 GPU

The error is:
D3Device Failed to create the device

Same for me! My game is suddenly unstable and i have huge problems with changing res. or even changing graphic settings.

The error is:
D3Device Failed to create the device

had this one to and manually reinstalled DirectX .... kinda worked a bit i guess but its still bad really bad.

I think there is something fucked up with the game a directX.

Please help :(

I have almost the exact same problem. Impossible to change res, or even alt-tab/win-key to desktop and game crashes. When i try to change fullscreen to window i get this error:

"":In source code file:..\Device\D3D9\DeviceD3D9.cpp at line 198,
Processing file:
ERROR:D3DERR_INVALIDCALL
Description:Invalid call
Message:Failed to creare the device

Any suggestions? i have gtx1060 6gb