One of the reasons I upgraded to an 840 was reviews about the sync time being much faster than my previous device. For a long time, this has been the case. The device has synced activities within a minute of me ending the activity.
Over the past couple of updates, something has changed. My activity now doesn't sync, takes forever to sync or requires I do a dance of turning BLE/syn off and back on on my phone and Garmin Edge.
Are there any steps I can take to make this better, like it was when I purchased my device?