Blaze bike GPS information inaccurate

[killermewtwo]

I bike to work every day and use the bike GPS to record my trip, which usually works fine. However, in the past 2 days, the last 1 or 2 kilometer or so of my trip do not show up after I synced. It still records my heart rate, but some reason the last bit is missing. To provide more detail. I would bike 15 kilometers in 43 minutes, but it shows up as 13.78 kilometers in 43 minutes. So when this gets uploaded to Strava, it shows me biking slower than I actually am, since it stretched the whole 43 minutes over 13.78 km instead of 15 km.

Moderator edit: subject for clarity

[AlejandraFitbit]

Hey @killermewtwo, it's great to see you here.

I would like to know if you have tried to measure your stride length information? If you haven't, I recommend taking a look at this post and follow the instructions provide there to do this. After this, test your tracker.

Let me know the outcome. 

[killermewtwo]

The issue has nothing to do with stride length, as this is cycling. Also, it sometimes work and has the full distance, and sometimes it does not.