After upgrade to Android 12, adaptive brightness feature drains battery.
I observed frequency of CPU cores jumping to max levels systematically, approx. every 3 sec. (in CPU-Z) when auto-brightness is ON, and current consumption jumping to 700 mA as well, when adaptive brightness is ON.
When OFF, CPU works stable in very low-medium level frequency levels.
When ON, again: jumping of frequency (and current consumption) to very high level.
And it is reflected in "BrightnessBNR" hidden details (shows 10% battery consumption in system application details).
Clearing partition cache and application "BrightnessBNR", "camera sensor" cache/data did not solve the issue.
PS. Second phone, with old Android 11, works fine and stable.
What type of reset do you mean? I have already restarted my phone several times...