Garmin Fenix 6 - no more HR light, and super slow. Hard reset does not change!

Hello the Garmin guys,

I have my Garmin Fenix 6, since a week, that is SUPER SLOW: the vibration of the notifications takes 3 seconds, the beeps are slow, etc...

The HR does not work (no light!)

And the sync with the phone (BlueTooth) does not even allow a coupling.

I tried to reset (OFF, the on with bottom right button pressed), it worked, but the watch is still slow!

Also the last beta software (16.10) does not change anything

Anything I should do? 

Thanks!

Marc