Do you have an AP that is in close enough proximity to the AppleTV to sustain the higher data rates? Is the client also in close enough proximity to get the same? Which model of AP are you using?
Have you also ruled out interference issues or capacity issues from other clients?
I strongly suspect that if you test with the AppleTV plugged in on the wire, you will notice heavily reduced to no issues.
(I would also ensure that you have updated to 6.1r3b if you are running 6.1r3 as, depending on your configuration, this could be causing you pain.)
I am having similar issue. The Apple TV keeps cutting-off in the middle of presentation. My senior management is very annoyed by this. We were running on Apple Airpod earlier and Aerohive document says that, it can be best on Apple Environment, and now we are doing Aerohive POC in Apple Environment where all devices are fully apple. During this POC, we are facing a lots of issues like, client connection not stable, apple TV cut-off and intermittent connection issue. It just a basic setup with one SSID using WPA2-PSK. Senior management keeps on complaining about the Wireless stability which is not stable using Aerohive AP121. Is it true Aerohive can work seamlessly on Apple Environment as they claim they do.... Please advise if special setting are required to support apple Environment. I was promoting Aerohive Wireless during the initial stage for this initiatives and now being questioned by everyone in my organization about the stability.....any expert in here... please kindly help or advise....
We've ruled our interference, added an extra AP121, AH and Apple software are up-to-date, and swapped for a new Apple TV. Wiring to the network isn't an option right now (probably a summer project).
I think Nick and Brad are on the right track. Also may be related to other area's like content filtering and bandwidth contention(Especially with youtube). But I'd guess it is due to design and contention for airtime especially since you are running the Apple TV wireless as well as the clients. I've seen these issues with other Wi-Fi gear and it came down to planning. Please let us know what you find. If you take the Apple TV to an area where you can plug it in to the network and then rerun the test, that may give you more of an indication on whats happening. What happens when you do this from a wired connection?
I would also recommend using a three stream 3x3:3 AP, like the AP330, AP370 or AP230, if you want to support this in a busy environment.
The AirPort Extreme has been a 3x3:3 device since late 2009 in its 4th generation.
I'll try the wired solution, as soon as I can figure out how to get airplay to be on two IP address ranges. Wireless at our school is 192.168.0.x and wired is .10.x, so as things are configured now, when an AppleTV is wired it is no longer on the list of available devices in Airplay.
I would still love to know if there are any settings to change on the APs (upgrading to 330's, etc.. isn't an option right now). I know from past experience at another school, certain settings can be tweaked to help with roaming, minimum data rates, etc.. Maybe I'll open a support case.
Connecting on 5GHz band also seems to have helped, but marginally. We're looking forward to the new AC models. We'll also go with one of the 3x3 stream models, which are supposed to work better in high capacity environments (we currently have AP120's and 121's).
I am having the same issues right now as well. Students are on a separate subnet than staff. Staff has brand new Macbook Airs, iPad 4s, and the Apple TVs are a couple years old now. Seems like the dropping is happening more from the Mac than the iPad, but it's hard to distinguish.
FWIW - since updating everything to HiveOS 6.5r3a (Honolulu.2530) a few weeks ago, errors, retries, etc.. seem to be lower (nothing scientific to prove this, just observation via the dashboard).
Hope that helps.