Hello,
So far, the tests we made for Lovense on Android works fine, but there are some constrains, you have to be on a wifi network (because that's how the Lovense app works) and you have to copy/paste the IP address (though we tried to make the connection setup as easy as possible)
Don't hesitate to give us feedbacks.
Regarding your "rendering line" issue, it sounds like a vertical sync issue, try to enable vsync in the game's options.