works well for me and has for a while. We actually use it at work, I have our Dr's setup with iPads for viewing their digital X-rays of patients and when they go in to show the patients any findings they can immediately Airplay to a large monitor in the room so it's much easier for the patient to see. This happens dozens of times per day and they haven't come to me with issues but maybe 3 times since implementing this in 2011.
At home it works fairly decent as well, I noticed a drastic improvement a few years ago when I added another AEBS in my living room, where most I would Airplay most of the time, and that AEBS is hardwired to the main AEBS in my office and the AppleTV I am AirPlaying to is hardwired to the living room AEBS. There is very very little lag between my MBA, iPhone or iPad and my nephew will usually AirPlay BigBrother Live Feeds to the TV while he's doing something else and sound and video looks pretty good.
I'm also using fairly quick WiFi hardware at work also, some UniFi 802.11ac Access Points which I'd like to install at home at some point and replace the AEBS's I have currently.
Also at home I purchased my own modem to replace the stock Charter ISP modem, so I now have 16 downstream channel bonding so hopefully that gives me a much more reliable internet connection and I use my own Airport Extreme Base Stations instead of using any type of WiFi solution from the ISP. I then scanned the WiFi signals in my area to find out which wifi channel was the most used channel and changed my network channels to something different so that I had less interference from surrounding networks.
Modem (Motorola SB 6183)
CAT6
AEBS #1 (AC MODEL)
CAT6
AEBS #2 (AC MODEL)
CAT6
LivingRoom AppleTV (3rdGen)