create a wired network connection to ipad 2, 3, or 4

My company is looking to create a wired ethernet/network connection to an ipd 2, 3, or 4. we are in interested in showing our app to the world. the company currently does that during a live events. The live event environment is VERY RF unfriendly and it does not allow us to playback videos in our app at an acceptable speed. Our current theory is that the "wireless connection" is not capable of delivering the video fast enough for the app. The project is limited to 3 ipads that are used for the live event. The project revolves around a successful ethernet connection and delivering content in the quickest possible fashion. please also be prepared to implement fixes on a case by case basis as necessary IOS upgrades may break the modification we are looking for.