Fix Buffering in Kodi using an addon called Echo Wizard. Simply install the addon, select the device you have Kodi installed on and everything else is done for you.
Want to watch free live TV on your iOS device without having to jailbreak? Aero TV is a great new app with 50+ channels (and currently growing). The app has dedicated servers which means less buffering and also allows you to mirror AirPlay the channels directly to your TV.