Graphic performance on iPhone 15 Pro stutters, particularly with graphic-intensive games?

I also have an iPhone 15 Pro Max and it really struggles with games mostly as you say graphic intensive ones like Asphalt 9 or even Mario Tour. Its seems fine initially but after about 10/15mins it does heat up and then performance degrades mostly when in driving games going round corners where its trying to draw more graphics quickly.

I am so disappointed and i wish i would have jumped ship to Galaxy as i have tried all the same games on her new S23 and they all look much better and run miles better with sold framerates.

I am now outside my return period so now stuck with this phone for 3years and i will not be getting another iPhone, it feels like the old iPhone 6 plus bendgate all over again where Apple will deny its the device or OS.

i have rang Apple Support and the outcome is i am going into the store next week to demonstrate the issue to their Tech Team, i did offer to screen record running the game when first started the phone and then after 20/30mins of playing record same level car etc and that way they can visually see the difference. They would rather physically see an Engineer, i will also bring my old phone and 2 Android phones running same game so they can see how poorly the iPhone 15 Pro Max is even compared to older less performant devices.

Same here. I love everything ELSE about this phone (iPhone 15 Pro Max) which I just bought last week. Sad thing is that this choppy game-play motion is a huge problem while playing my favorite game, Mario Kart Tour. My last phone was a iPhone 12 Pro Max and it did NOT have this problem. I am pretty upset about this, as I play often and competitively and the jerkiness is so bad at times that it really affects my outcomes, especially in multiplayer games. I expected A LOT MORE from the Apple Flagship phone boasting its game-play prowess. They need to fix this, as I’m sure it’s an Apple problem, not a Nintendo problem.

IOS updates have not resolved the issue and my friend has the exact same phone and his is fine which makes me think there may be a bad batch of manufactured devices and apple is in denial about this. I hate my phone now and I can’t wait till I change change it to a Samsung one asap. It’s really sad as I have had iPhones since they were first launched but my patience with them is now exhausted

I have exactly the same issue, even the old word games such as wordscapes and codycross stutter when simple objects animate. I noticed this during every update. I can't help but feel that sometimes this Iphone 15 pro max is not a latest flagship iPhone at all. My old samsung galaxy s10plus performed everything flawlessly and thats a 4-5 year old phone. Please sort this out Apple.