Is it possible to stream to YouTube while recording locally at the same time? It would be a useful option to have, especially when the cellular connection is unstable or bandwidth is limited.
Yes, you can stream and record at the same time. However, depending on your iPhone model, enabling live streaming may slow down tracking because the app needs to run an extra 1080p encoding pipeline in addition to the 4K one needed by the recording, and they all compete for the same hardware resources.