Question: Calculation of moving time

[Xeff]

How is the moving time calculated? Does it use GPS position or rather the step counter sensor (which i would suggest should deliver better results but this is just a guess).
Is the "sensitivity of movement detection" related to this? I still have it set on normal. I have an overestimation of pause times during steep/slow hiking. So it is usually showing way to low moving times. I attached an example file where i am certain the moving time is too low.