Hi, I'm having same issue. My iphone 13 pro max's the fps drops when i do screen recording or ON Guided access after install IOS 16 . Apple is trying to make us fool destroying old phones updating new IOS updates. so they want us to buy their new lunch phones so they can make more money. This is shit. Same on You Apple. we are not fools. Please fix this issue ASAP otherwise i will file case against you. be aware.

omg ! actually i'm planning to buy an iphone 13 pro max to play pubg global with 90 fps but seeing these complain about this phone,now i've changed my mind. i will wait until the bugs have fixed

same here after update IOS 14 my device is rendering while playing pubg especially when their are many enemies. Please fix this issue asap.