I have a 2013 macbook pro retina , when i extend the desktop to my tv over my apple tv 3rd gen the screen on the tv becomes really laggy. Its as if its about 1-2 seconds behind my mouse movement. Is there any cure for this. My apple tv is wired too my router and I'm connected wirelessly to the router. Will a apple tv update sort this or a mavericks update. Is anyone else experiencing this. Many thanks