2D fullscreen window is shifted to right

I noted all games I have and do fulscreen visuals are shifted to right and down.

In HDM is perfectly in the center. I tested several commercial products same.

Made Empty project and added SteamVR only and built - same.

Is there some settings or way to make it look same way as in HDM.

It makes recording videos of game look differently and sometimes useless.

p.s. Unity 5.6.1

Thanks in advance!