I HAD THE SAME ISSUE- SPLUTTER WITH STOPPING AND STARTING OF MY STREAM WHEN USING AIRPLAY FROM MACBOOK TO APPLE TV. VERY ANNOYING!!
THE BEST APPROACH TO FIX THIS ISSUE IS:
1. MAKE SURE THE APPLE TV IS ON A 5GHZ NETWORK (SUPPLIED BY AIRPORT EXPRESS/EXTREME).
2. MAKE SURE THAT THE MACBOOK (MAC) IS ON THE SAME 5GHZ NETWORK (SUPPLIED BY AIRPORT EXPRESS/EXTREME).
DOING 1-2 ABOVE MEANS THAT YOU WILL HAVE AT LEAST 150MBS SPEED FOR FILE TRANSFER BETWEEN THE MAC AND THE APPLE TV- DOING SO MEANS NO SPUTTER AND STALLING.
YOU CAN FIGURE OUT WHICH NETWORK EACH DEVICE IS ON BY USING THE AIRPORT UTILITY APP. OPEN THE APP. CLICK ON THE AIRPORT EXPRESS ICON WHILE HOLDING DOWN THE ALT BUTTON- CLICK ON THE ARROW NEXT TO THE APPLE TV AND MACBOOK AND YOU SHOULD SEE WHAT NETWORK THEY ARE ON.
IF THE APPLE TV AND THE MACBOOK ARE ON DIFFERENT NETWORKS I.E 802.11n (5GHZ) & 802.11g(2.2GHZ), THEY NEED TO BE ON THE SAME NETWORK THE 5GHZ NETWORK. IF THE APPLE TV IS ON THE 2.2GHZ NETWORK IT WILL BE SLOWER THAN THE 5GHZ MACBOOK NETWORK. THIS RESULTS IN SPLUTTER. A SIMPLE RESET/RESTART OF THE APPLE TV SHOULD DO IT AND IT SHOULD CONNECT AUTOMATICALLY TO THE 5GHZ NETWORK.
THE FIXES ON-LINE RE TURNING BLUETOOTH OFF AND USING A SEPARATE SCREEN DID NOT RESOLVE MY ISSUE. I SPENT SEVERAL HOURS ON LINE ATTEMPTING TO FIX THIS ISSUE.
BUT ITS FIXED NOW AND SO MUCH BETTER.