https://github.com/NVIDIA/nvapi/blob/7cb76fce2f52de818b3da497af646af1ec16ce27/nvapi.h#L4663
NvU32 averageEncodeLatency; //!< Moving average encode latency in milliseconds.
When using a VR streaming headset, this is reporting an active session with ~ 900 latency - it is very clear that I am not playing VR with nearly a second of latency.
Based on nvidia-smi, this field is incorrectly documented, and is actually microseconds, not milliseconds:
PS C:\Windows\System32\DriverStore\FileRepository\nvmdi.inf_amd64_fe5a9cae5c641286> .\nvidia-smi encodersessions
# GPU Session Process Codec H V Average Average
0 32 23520 H.265 1792 1856 305 869
0 32 23520 H.265 1792 1856 266 918
0 32 23520 H.265 1792 1856 298 982
0 32 23520 H.265 1792 1856 307 939