I have measured my IPD and get 70-71mm, maybe the rule method is not the best, but i think is aproximate correct, i have a big head (say my mother).
Then I configure the pimax for this distance and I get a confused image, like drunk. Then I configure the pimax to 50mm and get decent quality image, change the IPD again to 55 and can get the best quality image for me after try many distances. (Too many time for this tests, the piservicelauncher crash many times)
The image is good for me, but I feel my eyes working hard and focus far and near later is laborious. May be the display is too near to my eyes?
(I don't have myopia, no problem in my eyes.)