iOS 18.2 Battery drain and heating issues!

Do you all face the same issues as I do? Here it is:

I've iPhone 15 pro max and I’ve installed the new version of iOS(18.2) and i’m struggling with a few issues:

1- Overheating a lot sometimes even the screen is locked! And also overheating only when i tried to use the new Ai features like GenMoji and Playground app.

2- Extremely battery drain, i lose around 50% of the battery on 3~4 hours with screen looked and no apps in the background!

I turned off background app refresh and all hi siri options but still the same!!!

My question is why is this happening and how can i fix it and when apple will release a corrective update! My phone was never like this before this update!!