Foveated

foveated rendering

Foveated rendering fully renders only a small area at a time. This reduces the processing power necessary to render complex VR environments[…]

Combined with the fact that visual acuity of peripheral vision is significantly lower than foveal or central vision, adaptively and dynamically distributing image quality and detail across the visual field—known as foveated rendering and display—is an important class of perceptual optimizations for near-eye displays.

Foveated Streaming is a new feature that optimizes detail where your eyes are looking, and typically offers over a 10x improvement in image quality and effective bandwidth.