A few notes on Sport Vs. GPS modes: The aircraft will Always be in GPS mode when it takes off, regardless of the switch position. You have to toggle the transmitter side "Sport" switch down (non-sports / P / GPS mode), then back UP again (Sport Mode) to enable Sport mode.
Also, if you take off in some wind, the aircraft might begin to drift away.
Don't Panic!!
Flip the transmitter switch down, then back up again (assuming it was left in Sport mode when you took off).
When the aircraft enters Sport mode, it will have the control range it needs to hold its position in the wind.
Lastly, don't hesitate to cancel an automatic Return to Home (hit the red cancel / pause button on the remote), put it in Sport mode & haul *** home if your battery runs low - you will get Closer to home in Sport mode than you will in an automatic Return to Home mode, & you can do a much better job of picking a safe landing spot than the on-board computer - it only considers Battery Life Vs. Distance to Home to determine when it has to land, and it will gladly land in water.