"GPS Image Direction" is set to an incorrect value

Basic information

• Release version: 0.5.3
• System: Linux
• Capture Device: Action Camera | GoPro HERO3 | Garmin Logger

Steps to reproduce behavior

1. 0.5 seconds time lapse shooting with the GoPro HERO3 (GoPro HERO3 doesn't have a built-in GPS).
2. Record the location with the Garmin GPS logger.
3. Add "GPS Image Direction" to the Exif with the following command.
   mapillary_tools process_and_upload --advanced --user_name kudarisenmon --geotag_source "gpx" --local_time --interpolate_directions --overwrite_EXIF_direction_tag --overwrite_EXIF_gps_tag --geotag_source_path 2020-02-11.gpx --import_path /media/DCIM

Expected behavior

All photos will have the correct Exif "GPS Image Direction" tag embedded in them
As a result, the value of "MAPCompassHeading" in "Image Description" is also correct.

Actual behavior

One out of two, "GPS Image Direction" is set to an incorrect value (0).
"MAPCompassHeading" in "Image Description" is not correct.

Corresponding data

One in two isn't right because the time lapse is 0.5 seconds.

• sample Sequence key
  YEAlqO5djLS5a9ZH31H1sg

https://www.mapillary.com/map/im/waM3T8xr0jMpl6NMMidO8A

• correct direction
  
• incorect direction
  

Start with the process_and_upload command and reproduce the issue using the GoPro HERO3 images, Garmin GPX file 2020-02-11.gpx, and the listed interpolation options. Compare consecutive 0.5-second time-lapse images and verify that GPS Image Direction and MAPCompassHeading are populated with the correct direction rather than 0.