Why Forward Rendering Is Essential for Mobile VR Performance

The most important improvement with Forward Rendering is how much more efficient it is on mobile GPUs, which is critical for maintaining the high frame rates required for VR experiences on any platform.

Unlike traditional games that render to a single screen, VR applications must render the scene twice per frame, once for each eye. This effectively doubles the rendering workload. To maintain a comfortable experience (Reduce motion sickness), most mobile VR headsets require the developer to hit a minimum of 72 FPS such as the pico and Meta VR headsets. With some others requiring you to target 90 FPS minimum.