Hello,
I have a serious issue with my Fenix 8. Specifically, I rode on Zwift for one hour and burned exactly 665 kcal. Shortly after, all the data synced to Garmin Connect, and on the watch, it shows nearly 1200 kcal burned, as you can see in the photo.
To clarify, it’s still morning, and before starting the workout, my burned calories were at 0. In the second photo, you can see two spikes on the graph, where in one minute, I supposedly burned nearly 600 kcal.
This is the fourth time I’ve noticed this. Yesterday morning, I also had a similar calorie spike in one minute while just sitting on the bed. This has become quite concerning, so I decided to make this post.
Another issue I’ve noticed is that the heart rate sensor is not working properly. For example, when walking up the stairs quickly, the watch might show a maximum of 120 bpm unless I check the heart rate directly on the watch. When I swipe to the heart rate panel, it then adjusts and shows 140 bpm immediately. It’s as if I need to open the heart rate display for it to work correctly; otherwise, it underestimates the value.
I’m attaching two photos to illustrate the issue. Could someone please help? Is this a hardware issue, or could it be a software problem?
