My ipd is 61. I use the software ipd adjustments for fine tuning and it works well enough for me. The thickness of the facepad is crucial, as well. It seems that the smaller the ipd, the farther away from the lenses you need to be to be able to focus. Of course, I’ve also got graduated bifocals so seeing anything worth a dam is problematic. Most of the time, I couldn’t tell you if my glasses were off or the headset lenses! Once you go bifocals, you start learning to compromise: at least I can see. Most of the time.
Who ever heard of a manufacturer providing a vertical ipd?!! One of the reasons why some get so mad at Pimax is that they have done such an outstanding job on most of this, but they just keep dropping the ball in a few areas!