I see the same thing with the same version of unity-services, 4.16.0-0ubuntu2.
As long as the sound menu in dropped-down, unity-panel-service CPU use goes up to max and my processor temperature reaches levels I've never seen it reach before.
I don't know if it could possibly be related to the apps I have listed in the sound menu: Banshee, Rhythmbox and Spotify.
I see the same thing with the same version of unity-services, 4.16.0-0ubuntu2.
As long as the sound menu in dropped-down, unity-panel-service CPU use goes up to max and my processor temperature reaches levels I've never seen it reach before.
I don't know if it could possibly be related to the apps I have listed in the sound menu: Banshee, Rhythmbox and Spotify.