I'm probably gonna get a warning for this post, but I can't handle this anymore, I'm about to have a nervous breakdown with Yosemite. First was the bluetooth lag/disconnects now Airplay over Wifi stutters... Did they manage to destroy all communications on this release ? And yes, everything I'm complaining is made by Apple, from the magic mouse to the airport extreme to the Apple TV. Expensive piece of "marmalade" that then doesn't work properly. PS - Replace the marmalade with your favourite pejorative word... Marmalade this marmalade!