Google Chromecast requires high network stability. It is recommended to connect Chromecast with WPA2-PSK encrypted 5GHz 802.11n.
Google Chromecast requires a bandwidth rate of 4 Mbps, per user in typical usage. Latency will be less than 100ms when pinning Google’s public DNS server at 18.104.22.168. For HD video streaming, greater than 5 Mbps is required. Poor bandwidth can also cause latency problems.