Garmin Fenix 5x pool swim length completely inaccurate

Former Member
Former Member
Garmin fenix 5x indoor pool swim completely inaccurate
1) I swimmed 1000m in Valhalla public indor 50m pool yesterday BUT Garmin Connect App said I had swum 1100m.
2) I swimmed 500m in Valhalla public indor 50m pool today BUT Garmin Connect App said I had swum 900m.

I have set the correct pool lenth to 50 m in Garmin fenix 5x before swimming.
What should I do? IIndoor pool swimming was the purpose for choosing Garmin fenix 5x!

Best Regards! Ola