Huawei WATCH 2 Faq page 18

What should I do if the positioning function on
my watch is slow or inaccurate?
The accuracy of positioning is affected by environmental factors.
Positioning will be affected if:
1. There is no GPS signal (such as in indoor environments like shopping malls).
2. You are in a high-rise building.
3. There is signal reflection from bodies of water (such as lakes and oceans).
4. There is signal reflection.
5. There is interference from metal surfaces.
If possible, exercise in open environments for more accurate positioning
results.