I'm pretty sure that you're wrong :
https://thevrbase.com/why-does-the-90-hz-refresh-rate-matter-for-virtual-reality/
You might confuse it with the "Asynchronous SpaceWarp" visual trickery that the Rift does that allows it to cut the framerate pushed by the graphic card in half to 45 Hz with hardly any noticeable difference?
https://developer.oculus.com/blog/asynchronous-spacewarp/
Biting the hand that feeds IT
