It's as high as you want it to be. It's magic. There are unicorns that are shitting rainbows on pink grass... you can see a giant whale jumping somewhere in the distance... and then... and then... there's an astronaut that is waving at you and he has a giant red heart-shaped balloon in one hand... just for you... and in the other, beautiful light glasses, with enormous FOV, retina res and holograms that are projected directly in your eyes and are indistinguishable from reality. They added just a tiny bit of glow, so you won't freak out when you'll realise they are actually not real.

It's....... beautiful!

And then you wake up and you are left with shitty 40 degrees FOV, transparent projections, one single focus plane and a golem (from free Unity library) that is throwing transparent rocks at you.