Most of my hikes are mixed terrain, some forest covered areas and open alpine terrain. The attached track is from primarily open terrain as far as I recall. Viking reports a total elevation gain of 1077m, Garmin Connect says it was 858m. A similar delta as for the first track, which was more mixed terrain.
Thanks for looking into this! What device are you using? It's a Fenix 6.
Statistics report too high elevation gain