Hello,
because I haven't found something about the Komoot App for Garmin here or at the Komoot forum I will start one...
I have the following problems with your app on my Fenix 5x:
1. Calculating the navigation for even a short route (around 10km) takes more than 15 minutes. Could turning off some of the maps (like the cycle map) on the the device help?
2. Sometimes the exact same route (created at the Komoot website and navigated with the app on my android phone) is different or shorter. It could be caused by the different methods way points are created but I could not reproduce the error.
Otherwise the app works as advertised and I am very happy to use Komoot now with my Fenix watch!
Does anyone have similar problems?