Thank you for the guide, it was really helpful. However, I would like to give some additional recommendations:
1. It is actually possible to combine VRPerfKit (previous tutorial) with VD. For my setup, this is much better than VD alone. The Synchronous Spacewarp often generates severe artifacts when there are flashing lights or frequent teleports (Such as playing Vam Produce 69). The super resolution of VD is also not as good as FFR+FSR in VRPerfkit.
2. For those who connect PC to router via WiFi, VD will likely show "PC not wired to router" warning. I solved this by turning on mobile hotspot on PC and connect my headset to the hotspot rather than the WiFi router. This significantly improved latency and stability.
My setup is i7-14700k + RTX4080S with quest 3 headset. I am able to run almost everything smoothly (60+ fps) under godlike quality without frame generation or loss of image quality. Hope other people find this useful!