I have had my Pimax 4K for approximately a year now. I tried the V2 Pimax 8K for several minutes but not on any AAA games. The standard Pimax demo apps. Besides the items you listed, as a 4K owner you really need to add “ghosting” to your list because that seems to be the biggest issue with the 4K.
Ghosting - None. No matter how fast I swung my head left and right, I saw no ghosting on the 8K! Major upgrade from the 4K.
FOV - Big improvement. Not a “OMG this is amazing” experience. But good experience. I think I needed to be in cockpit game to truly experience the benefit of a wider FOV than a program like Blu in which you really don’t have set boundaries and point of reference like you have in a cockpit.
Brightness: The 4K is a bit on the dark side. The 8K isn’t super bright but it’s much brighter than the 4K.
Resolution: The 4K and the 8K appeared very similar to me
SDE: The 4K and the 8K appeared very similar to me
Stuttering: I don’t think it would be fair comparing my 4K on my gaming rig to the 8K prototype on a notebook in this category. But from my demo, I would say they were similar. Not 100% perfect, but nearly.
Thanks a lot for your review @tomohm. It is a little surprising that you say the 8K’s 90 degrees added FOV is not an “OMG this is amazing”. I backed a 5k on KS and hoping that the FOV would blow me out of the water compared to my htc vive’s FOV. But thanks, experience says alot.
I just found out that the 4k’s refresh rate is only 60Hz. Does it make you feel nauseous compared to the 8K?