Svogi

What are you talking about? no one uses Nvidia’s VXGI…
what do you mean by precalculate probes?

For starters, Forza Horizon 3 uses “voxel-based global illumination system to calculate light bounces in real-time.”
QB uses screen space dynamic GI in addition to their large scale irradiance GI volume.

and VXAO is an ambient occlusion feature, has nothing to do with GI. you are just making stuff up at this point.