remaining ascent twice as higj

Hi there, 

if I start a synced route on the instinct the LAT. distance is shown correctly but the remaining ascent is nearly twice as high as shown in the connect / komoot app. tried routes created within komoot as well as GC, in all cases remaining ascent / height is shown correctly in GC but not on the watch while navigating...

SW is 9.2

anyone else seen this as well or anyone able to offer an explanation?

thanx in advance