Does airplay to AppleTV from iPhone/Mac lag for you?
I have an iPhone X, 13in MBP 2017 and an AppleTV 4th gen, (and previously a 5, 6s, and 3rd gen ATV) and Airplay has NEVER worked without a stupid amount of lag.
The only thing that works properly without lag is iTunes movies, anything else and the lag is unbearable. Hockey game? Football game? Movie? May as well just watch it on the iPhone screen because the lag through Airplay is unbearable. Mirroring screens has almost multiple seconds of lag, especially if you are using a Mac. Audio cuts in and out and your lucky to get an SD quality stream running for video.
I used to think it was due to my AppleTv 3rd gen. Nope, issue remains with the 4th gen. Then I thought it was a bad router, nope upgraded to 500 mpbs internet with a new router and the issue remains. Maybe hardwiring the AppleTV with an ethernet cable would solve the issue? Nope, no change. It is evidently Apples technology failing, has anybody managed to make it work in a bearable manner? If so, what is the trick, please help me.