I may have found a related issue with my Suunto Vertical + Stryd setup.
My setup:
Suunto Vertical, firmware 2.50.28
Stryd paired as Foot POD
GPS OFF
Foot POD auto-calibration OFF
I performed a controlled test on the same measured section of approximately 208–210 m.
At easy pace, Suunto recorded:
206 m
211 m
At faster pace, on exactly the same section:
348 m
289 m
281 m
290 m
Stryd was also recording independently in its internal memory. The Stryd Offline Sync data looks normal and does not show the same distance inflation.
I sent both the Stryd Offline FIT and the Suunto FIT to Stryd Support. After reviewing the activity, Stryd Support told me that Suunto was receiving Stryd data such as power/cadence, but was not using Stryd as the source for pace/distance.
Since GPS was disabled, Stryd Support said that wrist movement was the source of pace/distance in the Suunto activity.
I have already tried a soft reset and re-pairing Stryd, with no change.
Suunto Support also has the logs, both FIT files and screenshots and is investigating the issue.
This seems quite similar to the pairing/data-source behaviour discussed earlier in this thread.
Has anyone with a Vertical + Stryd setup tested whether pace/distance really comes from Stryd when GPS is OFF?
I would be very interested to know whether this is reproducible on other Vertical watches or specific to my setup.