When I hide the game by alt+tab and try to come back I get the error
"Direct X error
Code: 8876086C
Description: The method call is invalid. For example, a method's parameter may have invalid value. While trying to do this: Can't reset the device

File: rendd3d.cpp
Line: 1199"
Unfortunatelly game hides even when I'm pressing "shift" to walk and press left mouse button (and that I guess is another problem to be solved, why game hides when I do this".
I play on Windows 10

Check what sound device you have selected in audio options, I had the same problem.
And what I discovered was that I had no sound in the game. I selected default sound source and game no longer crashes.

Unfortunatelly it's still crush. But also, I had sound in the game from the beginning

Mine error logged this in the file:

Msg: DirectX error
Code: 8876086C
Description: The method call is invalid. For example, a method's parameter may have an invalid value.
While trying to do this: Can't reset the device
File: rendd3d.cpp line 1199
Time: Sun Nov 22 05:58:26 2020
errno = 2 (No such file or directory)

and, looks like if you alt tab the game long enough it will give me another error too

Msg: DirectX error
Code: 8876086C
Description: The method call is invalid. For example, a method's parameter may have an invalid value.
While trying to do this: Can't reset the device
File: rendd3d.cpp line 1199
Time: Mon Nov 23 07:54:24 2020
errno = 33 (Domain error)