>>286609635
You're clearly focused on the HMD if you're not immersed, this is why you are not immersed. I'm not just telling you to be immersed, you said yourself you're too focused on the wires and HMD. 
Stop focusing on them, it's literally that simple. You are in control of your own focus, it's one of the few things you ARE in control of in this world where most things are out of reach and out of control.
Meditate or something.