Airplay Will Not Work From MacBook Air Unless Mirroring
Trying to play video from MacBook Air 2017 Big Sur. Open video in Quicktime Player and click on airplay icon at top of video window - Roku (mod 3810RW, ser# YHOOGG907254, dev id 22315G907254, software 10.0.0 build 4209-50) Streaming Stick opens Airplay screen then goes to the set up for "AirPlay and HomeKit Settings". When I open MacBook Display and start video using airplay through Roku Streaming stick the audio is ok, but the video pauses frequently and is out of sync.
The last step is using mirroring. That's when video is out of sync.