About two weeks ago, I purchased a new Q500 to replace one that had crashed. While flying, I noticed the drone was not responding well – the drone was reacting sluggish and not responding quickly. It did respond to triggering the camera, but the movement of the camera up and down, and the direction of the drone and height adjustment was slow to respond. This was an issue I had with my previous Q500, and was told by Yuneec that that was normal. Yesterday, I was photographing a home in the country with my new Q500, I flew up to about 300 ft with no issues. Shortly afterwards the drone started acting erratically, and not responding to the controls and started drifting away. I tried bringing it down but got no response, even after going into the home position. In the monitor, I noticed the drone rotating and moving further away, until it went out of sight. And, because it had a new, fully charged battery, it had plenty of flight time available to travel, possibly a couple of miles. Because of the wooded area, it was impossible to find. I was under the impression that the drone would return to home if it lost a signal. has anyone had this issue with their drone, and is there any GPS tracking device I can attach to my next drone so I can find it if it flies away again.