I have this issue in upscale mode in both eyes. It looks similar to this (index) but horizontal, and it looks like each line is 2 or 3 pixels high intead of just one. Also it happens all the time not just when moving.
Happens worse on some colours and is much more obvious on solid blocks of colour. Really makes the image look sh*tty.
I will edit in a thru the lens later unless this is already known. I’ll also open a ticket when I have the photo.
After googling I ended up here, which has Pimax specific info and more links etc : Pimax needs to implement the equivalent of Valve's vertical column correction into Pitool (But horizontally)
Maybe I was wrong about it being in both eyes I’ll have to check. But the above thread doesn’t sound promising. Maybe I’ll have to RMA?
E2 : Seems to be in both eyes, but worse in one. It is hard to capture with a phone camera but here is my attempt. You’ll need to zoom in enough.