Fenix 5 - baro/alti crazy reading

old problem on new watch ?
got this new unit last friday, thats are some pics of the alti/baro sensor crazy reading, same thing happened to many f3 units. Calibration will work for less than 2 minutes, than the pressure reading start raising or fall down. Someone else with the same problem ?
ciq.forums.garmin.com/.../1279074.jpg ciq.forums.garmin.com/.../1279075.jpg ciq.forums.garmin.com/.../1279076.jpg ciq.forums.garmin.com/.../1279077.jpg ciq.forums.garmin.com/.../1279078.jpg