VIVEK RAO
Battery backup is very bad in latest update.

[200412] ROG Phone II_ZS660KL_WW_17.0230.2002.32
The update was released like a couple of hours ago
You can't possibly be that naive to judge battery optimisation based on a single charge data
Whenever you update your phone the phone needs to calibrate itself to the new firmware and that's the reason it heats up and drains battery faster, give it some time and it'll be back to normal
Atleast wait for 2-3 charging cycles to actually comment something about the battery optimisation