Garmin GPS sucks sometimes

As I just praised my Garmin watch I also have moments when I hate it.

For example 2 days ago I had quite a good run (by far the fastest ~12km lap around my favorite lake) but the GPS was messing the data up. Of course it didn’t harm my running experience in a stunning winter wonderland (with almost no people) itself, but as a Data Enthusiast I hate bad data and bad data quality.

95% of the time the Garmin GPS works perfectly fine, but the 5% where it struggles without any obvious reasons (e.g. being on an open field, freshly synced and updated before, clear weather, etc.) are quite annoying.