Software Update 16.11 battery drain

After my Venu 2 was updated with the latest software (16.11) I'm losing 4% battery per hour.

It might not be related to the SW update, perhaps just a coincidence.

My watch would last a week without charge previously, now I'm charging it every day.

I've contacted support and uninstalled all apps/faces and went as far as a factory reset, but to no avail.

Is anyone else having issues?

The watch isn't a year old yet, so still within the 2 year warranty. However, I would prefer to avoid sending watch back and losing my training data in its absence.