The help desk suggested that I raise this issue here .

The latest range of nVidia drivers (451+, versions with the new GPU Scheduling feature) exhibit severe frame drops on AMD 3950x / x570 / 2080ti / Rift CV1 hardware.

v446.xx versions have better performance than the latest versions.

I currently get good performance with v446.14 but cannot play some new games because they insist on v451+ versions, and the oculus headset will no longer be useable.

Continued support of the latest hardware and drivers is critical as some recent games will not run if the latest video drivers are not installed.