I think i have all the recommended spec for gamestream. its obviously best over wired connection; i tried changing channels, move it closer to router. i have my pc (6700k + gtx1080) i stream from on a wired connection to my asus RT ac66U. i keep getting disconnected or packet loss , noticeable lag / input lag.
any one with asus RT ac66U have any specific setting that i can try to improve the experience?
Use the open-source WiFiAnalyzer for Android to help troubleshoot your WiFi network.
Definitely make sure you are on your 5Ghz network. Your symptoms sound like you're experiencing congestion on 2.4Ghz.