Doing virtually reality (VR) well is very hard and it requires significant compute resources to render immersive VR worlds with the kind of fidelity, latency, and framerates necessary for users to feel truly connected. Where a typical PC game may feel smooth and immersive at a paltry 1080p resolution at 30 or 60 frames per second, VR headsets

Source: Hot Hardware – NVIDIA To Demonstrate Foveated Rendering Tech To Reduce VR Workloads, Mimic Human Visual Systems