When viewing an activity on the Player, why doesn't the Player display all the data in my activity?
You're likely viewing an activity that was recorded over a long period of time with a lot of data. In the interest of loading the Player quickly, we've reduced the amount of trackpoint data that the Player processes and therefore the route may appear to take shortcuts.
This doesn't cut it for me. Other GPS sports websites (with far fewer development resources at their disposal than you guys!) have found a way to get around this. I've taken to exporting my data from Garmin Connect and uploading it to ridewithgps.com. Sure, it's not a 'pretty' as Garmin Connect but it can play back a very long ride at the 1-second resolution that many of us need.