I glanced earlier at the source for the OBS MacOS virtual webcam plugin and from what I could tell it read the webcam data into a buffer and fed that as the "vi

I glanced earlier at the source for the OBS MacOS virtual webcam plugin and from what I could tell it read the webcam data into a buffer and fed that as the "virtual webcam" stream. If that's true, the extra reading and writing could be taking up cycles causing additional latency.