Instinct Freezes when I use the Track Back option

Hello, Hive mind,

My instinct has frozen on me a few times during my return to the starting point on the hike. I save the information, and when using the trackback option, it will freeze and show only the load screen. I have called Garmin, and they have helped to factory resetting the unit. However, I'm still is having the problem. 

Thank you

Pete =)