Battery drain was horrendous on Android 10, only got 3 or 3 and a half hour SoT.
Tried wiping cache
Tried factory reset
Tried changing the battery saving modes
Although phone was running smooth, but in relation to the battery nothing helped. Over the weekend I rolled back to Android 9. Finally I have a solid battery again and all the issues gone away.
I do think Samsung has massively dropped the ball with Android 10 upgrade killing the awesome battery performance of this phone. I am not likely to upgrade to Android 10 any time soon