I had it working smoothly. First I had to update to most recent chromecast app from google play in US, then once I tried screen mirroring option in the app, it would connect to my chromecast but show nothing. After doing this the chromecast then wanted to reboot and update itself to a later software build. While it rebooted rebooted note 3 and laoded up the chromecast app, option was there to mirror to tv so I chose it and it worked flawlessly and smooth even playing games. I was using stock android TW 4.4.2 and played trials frontier. I have a netgear WNDR 3700 V1 router using 54g (2.4) to connect phone and chromecast to. The tv was like 1ms behind what was displayed on phone but still worked flawlessly. I had my phone power saving mode on and cpu power saving checked. Even with this power saving it worked great for web browsing, videos, and games. Phone did get hot and battery drained quickly! I also use WPA 2 encryption and security!
Originally Posted by badchorizo
Could people who have it working SMOOTHLY (to me not smoothly = not working) at 1080p please post the wifi setup they are using? (Router/AP model and 2.4 or 5ghz, is it in the same room, other devices connected, port forwarding or QoS or other router config, or anything else noteworthy)
I haven't touched my chromecast in 3 months because it basically didn't work for anything I wanted to do (main thing is playing photos/videos shot with camera on a bigger screen). Back then I was using a wired router and a Asus EAN66 as wifi AP (box-claim speed of 450 mbps) sitting within 10 feet of both phone and TV/Chromecast in the same room but it was horrible - I was lucky to get maybe 20 seconds of smooth video max. Then it would crash. Much faster to transfer files to computer via usb3 or sdcard then play on TV. Similar story on a Linksys E1000 but I forget which was worse.
True smooth 1080p screen mirroring... that would be nice. Truly something that would wow people. I now have Netgear R7000 (model name "Overkill") and it's 5 feet from the TV so it really better work now! I'll report tomorrow when I can mess with it.