I'm new to this forum and this is my first post. The Mavic is my first drone and I've had it for about a month. Finally switched it into sport mode today and at full throttle in level flight it read 62.5 mph horizontal speed. There was no wind and after about a minute of flying at 60+ mph I got a rapid battery discharge warning which remained for about 10 seconds until I slowed down. I thought the maximum speed was about 40 mph. Has any one else experienced this?