The audio quality isn't anywhere near the audio quality that you get on Windows when screensharing. Maybe on Windows it bypasses some audio processing which is applied otherwise with this addon?
For testing I recommend opening two clients, enabling the addon on one and then just disabling the audio output from Spotify for example to internal stereo but keeping the output from the second client enabled so you hear only the screenshare audio.
The audio quality isn't anywhere near the audio quality that you get on Windows when screensharing. Maybe on Windows it bypasses some audio processing which is applied otherwise with this addon?
For testing I recommend opening two clients, enabling the addon on one and then just disabling the audio output from Spotify for example to internal stereo but keeping the output from the second client enabled so you hear only the screenshare audio.