Pimax‘ feature called Brainwarp does not render in real 180Hz. The trick is to render each 90Hz panel with a slight timing offset, so that you perceive 180Hz. But each eye still has an update rate of 90Hz. It supposely can do that in 60/120Hz, too.
The problem for pimax is, that the game rendering engine has to support it to be in any way effecient to save processing power. By default a VR or 3D game always renders two views at once and delivers these to the compositor of the hmd ecosystem. How Pimax manages to render only one view in the gameengine needs to be seen.
Afai understand how vorpX works, it could propably alter the viewport for all games which support geometry 3D, but the slight timing difference for each panel must be supported by the HMD hardware.
I did tell Pimax more than once to get in touch with Ralf, but if they ever will…
I am a backer of Pimax 8k and 8kx on Kickstarter and i think we should wait for the first official test of this feature. Personaly i doubt that it’s more than marketing..