What are your symptoms dude! I think I'm experiencing the same thing...
After a few minutes, it starts to jitter and over time gets worse and worse until the audio drops all together then eventually the program just stops and it goes back to the apple tv menu. If I try to use the remote when there is no audio nothing happens, atv seems to store up the presses and then once it stops playing the program all the button presses happen at once.
This occurs on only some of my files, but they all worked fine before updating to 6.1.
I'm writing from Germany. Exactly the Same for me, After the update :-(
Apple TV 3 plays fine before the update.
I play from iTunes iMac or iTunes MBA.
In the beginning it plays Fine. But with, specially bigger Files
the Movie begins to stutter in moving Scenes
Than it get worst and than the Dolby Digital 5.1 Stops,
No Sound and if I press Menu with the remote, it Takes
If I Play forward or backward if starts to Stutter, its OK,
but just for a while...
Its not the Network, it Must be because of the update..
iMac is 10.9.2
MBA is 10.7.5
Everything was fine before the ATV update to 6.1
Reset the ATV, router etc nothing helped
Unfortunately it took a while to Check, if its solved,
Because stutter n the movements begin in approx 10 minutes
and the DD 5.1 to no sound effect comes After approx 30 minutes
Go back to the previous OS of ATV is also Not possible ;-(
Do we really have to wait for a new, hopeful this solving, update?
Usually I have WLAN
I try with LAN, the same effect
I am sure, its not the network.
If playing a Movie like Dumbo, its OK
But a newer Movie, I'll get these effects
Don't matter if the Movie is in iTunes on an external or internal HD
Remuxing a file would not be a Problem, if it works
But remuxing a big Library :-(
If you have one of the original Apple TV 3rd generations you can downgrade to a firmware released in June. Apple released a small revision in 2013 that they didn't announce. You can't even tell by looking at the ATV.
If you have the 3,1 version Apple is still signing an older version software released in June. Google "Apple TV Firmware Links" and it'll be something with "xxx.icj.me/xxx/xxxx" for an address. You can get the older version from there. It's the one with a green check mark (6.1.4 is what it's listed as) I'm not going to link the site because I don't think Apple allows that on their own forums. Just downgraded my ATV and it's working like before now. You'll need a microusb and the power cord.
1. Open iTunes
2. Connect ATV via MicroUSB
3. Connect Power Cord
4. When ATV shows in iTunes hold 'Option' and click restore then point it to the old FW you downloaded.
Worked for me. Hope it works for some other people.
Add me to the list of people having this issue. Apple TV firmware 6.0 worked perfectly, 6.1 broke playback of numerous films. Others work perfectly.
It's not a buffering issue (as the OP stated, using wired CAT6) and it buffers fine. The films start to stutter and drop frames quite quickly after playback starts. If you let it play for a while stopping and returning to the menu takes an age.
Downgrading to firmware version 5.3 fixes the movie playback and it all works perfectly again (thanks Justin!). Unfortunately lose all the nice additions in the 6.x versions of the firmware, but I would rather be able to play my films.