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It's trash. iOS 16 has stutters in all gaming. Im playing on an iPhone 14 pm and every game has been the same stuttery mess.
 
most likely this bug is causing it.. https://forums.macrumors.com/thread...eproduce.2370412/?post=31737455#post-31737455

ios 16.2 beta 3 have the best gaming performance of any version i use (i bought the phone on ios 15.3), just make sure to minimize the app then open it back again if you open notification center during your gaming session
Everything run okay on iOS 15.7 but iOS 16 has a lot of bugs! I play 90 fps and when enable guided access drop my fps to 40!I can’t play without guided access because I am a 4 finger claw player! I switch to 60 fps but also I face fps drops specially in close range fights on hot drops .. after that I downloaded iOS 16.2 beta 4… the problem with guided access remains but better gaming experience at 60 fps… after that I try 16.2 release candidate! Unstable 60 fps.. bug with multi touch… sometimes when I peek zoom and fire the fire button doesn’t work or stuck and fires alone! 90 fps problem with guided access remains… and my phone get hot after five minutes and drop brightness! It’s a mess! (iPhone 13 Pro Max)
 
If you have iPhone 13 Pro/Max you should be okay. If you have iPhone 14 Pro or Pro Max, you may experience stutters in gaming.
 
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