I have a:
- new MBPr 15" late 2013 with dedicated graphics card
- new airport extreme base station
- 3rd generation apple tv
- iPhone 5s
- 200mb download speed (not important, as streaming video on your local network has nothing todo with outside bandwidth)
All equipment is up to date software wise. Airplay mirroring from my laptop to my apple tv is ok. I get frequent lag, pixelation, audio skip (every 10 mins or so).
I'm using the 5ghz specturm to connect to the airport express so shouldn't have any inteference from my neibours (accordiing to iStumbler i'm the only person with a 5ghz setup using channel 30). I've tried connecting apple tv wirelessly and wired. No issues streaming from my iPhone or an iPad!
Surprisingly, using apps such as Beemer or Air Video Server on my MBP work better than native mirroring when it comes to video play back.
Strange when you think how Air Video works:
- Video file lives on MBP
- iPhone connects to laptop
- Video plays on iPhone and is sent to Apple TV via Air Mirroring
Rather than:
- Video played on laptop
- Video sent to Apple TV
Seems bizzare that my iPhone can handle better streaming than my pro laptop.