[操作疑難] Apple TV3 - Airplay (爰奇藝 apps)

我用iphone 4s / iphone 6s 裝 爰奇藝 apps 做airplay
通常播一陣  (10-20min) 就會freeze 畫面
但用youtube apps 就無呢個問題

router: engenius ESR300h (應該比較人用)
802.11n , 20/40, WMM on (無得 off), WPA2 AES
802.11g,  WMM off, WPA2 AES

請問有無ching 遇過 ?