My battery performance seems on par with my last software version on my Samsung Galaxy s²² Ultra.
Although battery stats / usage time's is a subjective topic as we all set up our phone's differently and use different apps etc.
I haven't had to clear the phone's System Partition Cache Files Section to date but this is a good avenue to at least try if needed.
Clear Cache Files from the phone's System Partition Section > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too.
As is Safe Mode > Safe Mode > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict.
Can you charge your phone to 100% and then use the phone to around 15% battery and then in your Device Care Section under Battery look at the list of apps and the % there using from your battery.
Please screenshot this page with also using the scroll capture option to show All apps and also show your phone's top status bar.
Then upload this screenshot into your thread here so we can see what's going on.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help.