I have a Samsung Galaxy S2 Tab. I have both the DJI Go and Litchi app installed. 1. I can't close one app and open the other. It won't connect. I have to end one app, turn off the remote, turn it back on, then open the other app. Is this normal? 2. With the little bit of testing I did the Litchi app had a delayed FPV and the video was choppy. Is there anything I can do to fix this? 3. I am disappointed that the Litchi app does not have the detailed battery info that the DJI app has. Do most people use the DJI app for normal flying and Litchi for waypoints?