Continued Running Hot and Rapid Battery Drain with new IPhone 15ProMax even with 17.1.1 software

my IPhone 15 ProMax has the latest update of 17.1.1 and after using it for an hour, it’s super hot and batter drained from 90% to 69% (which once it heated up - hot to hold- that’s when the battery started draining). I received the phone about 1.5 months ago and it’s been happening on and off regardless the software version.

I had an IPhone 11 Max prior to upgrading and never had any such issues. I also have alot of the background functions turned off to minimize the use of power. It doesn’t happen all the time but a lot of the time, and I cannot discern that one thing or another triggers it except for continued use.