Total ascent calculation issue after SW upgrade 9.2

Former Member
Former Member
after upgrading to SW 9.2 I experience substantial decreases in total ascent calculated on trail runs on known routes with known total ascent, as also recorded correctly before SW 9.2 update.

I have tried soft and hard reset of my F5X, but the issue persists. I have also tried to auto calibrate altimeter and barometer just before start of training. The altimeter seems correct, as well as elevation profile drawn of my trail run trainings afterwards - but total ascent incorrect still, approx total ascent measured is approx 35 - 50 % of “actual and previously measured total ascent”. This cannot be caused by the normal and expected imprecision of ascent measurement with gps and altimeter / barometer, in my view.

Any known ways to fix this?

from a frustrated trail runner, hunting total ascent in training runs for ultra mountain racing.