Nvidia does more than just GPUs.

Nvidia makes both SoCs like the Tegra series and server CPUs (Grace; ARM based to be used with their ML/AI cards with much higher bandwidths than regular CPUs).

Nvidia also just announced that they are working on a consumer desktop CPU.

I can speak from experience having used both wired (Index) and wireless (Pico 4 with ALVR) VR on Linux and the performance and stability is horrible. Always has been sadly. I can play some VR games on Linux but overall it’s not worth it in the current state.

If you rely on it that much maybe its time to download it all and keep it.