Battery drain after update to 7.10

I also noticed quite a different behavior of the battery after the 7.10 fw update.  My battery drain is fine in SW mode, until I do an activity. During the activity, it is much higher than previously and than expected (Around 10% per hour in GPS mode without music, and around 8% per hour with ultratrac mode) and after the activity the battery drain is almost nothing for several hours (10), sorta compensate the extra battery drain during the activity. 

I guess the latest FW added a smoothing to the battery drain to make the PABD (post activity battery drain) disappear. 

I had no battery issues with the previous FW. 

I hope that will be corrected with the next FW update.

Also noticed the same for my 5x Plus with the new update. I had like 0.15-0.2% per hour battery drain before now it increased to 0.4 with the same settings, same watchface. Maybe we can try the beta software, it might help.

Each action that you perform on the watch, be it switching through widgets, logging an activity using GPS or listening to Spotify will draw a specific current from the battery which in turn drops the voltage in that moment, only to have the voltage rise again once the watch is idling (i.e. doing nothing more than displaying the watch-face and running the HRM LEDs). 

What the watch ends up with is a plot of various voltage levels over the course of a given time period which it will compare against a model to approximate the percentage of charge remaining.

*
    *         *
        *  * 
^
v                  * 
                        *    * 
       time -->

"Post Workout Battery Drain" - a term which I've seen used a number of times in this forum, is what people are using to explain the value smoothing which happens at the tail end of an activity when the voltage jumps up following the various circuits being turned off and apps being stopped. Garmin appears to have altered this model in the latest firmware release to more accurately reflect the true state of the battery charge during activities and also following them.

You might notice that your battery burn rate appears higher during an activity than it used to be, but it's not actually the case. What you're seeing is a more accurate representation of the batteries true charge.

I also have experienced an increase in battery drain on the 5x plus. I have changed the watch face to the standard garmin and that has helped some. But I have noticed that after my typical 50min swim (no GPS) that the battery level has dropped 12% compared to about only 6% prior to 7.10.

Any solutions here? I see a lot of threads about bad battery life issues but no solutions. In my case it is literally discharging 7 times faster then my old Fenix 5

For me (subjectively that is) it is looking like 7.10 is doing better in terms of battery drain.