I forgot i had a PS4 pad somewhere. It's working now. Thank you.
About the optical problem, here is what i see when i put the headset comfortably on my head. In fact, the effect is much worse. The farther i go from the center to the bottom, the more blurrier the text and image is. The top remains clear.
I'm wearing glasses. Tried with and without. I have approx the same problem.
Again if i tilt the headset a bit the picture is crystal clear.
Not sure if it's a defective unit. I doubt it. However, i also have the audio problem (no Pimax audio playback in windows), so i might return it.
Thanks again for the help.