I am still experiencing high battery drain, am currently on 22.21 Beta firmware.
All the usual things are turned off (garmin share, pulseox, etc etc), I have also turned off and turned on, both via the menu and by holding the power button for 15 seconds.
I have even kept a log as it is so frustrating. (No activity during this period).
55% 2152 11th Feb
49% 0741 12th Feb
47% 1030 12th Feb
43% 1940 12th Feb
38% 0843 13th Feb
35% 1650 13th Feb
32% 2234 13th Feb
27% 0740 14th Feb
18% 1951 14th Feb
14% 1030 15th Feb
I used to charge every 10/13 days depending upon activity, now every 5/7 days.