Earlier quoted context omitted.
The jury is still out on that. There simply is no research to prove or disprove what you or I are saying. My educated guess is that it actually is quite important and the key to making VR more comfortable for long term use. I think it is the primary issue. I am a software developer who works in the neuroscience field. I am not an MD but I have read enough research to know you cannot definitively say what the cause is…
I've been working in VR and AR for nearly a decade. I've even built my own headsets. The experiences that make people sick are always low framerate. I've put people through experiences pegged at 90FPS for hours at a time with no nausea.
You need foveated rendering to start with but im sure you know the rest. If you want VR, well you need actual VR. Its not enough to trick your vision superficially. You have trick the whole system. I digress.