iPhone 15 Pro Input Lag and Stutter

I have an iPhone 15 Pro, and I am disappointed with the optimization in many apps. In some games, such as Geometry Dash and Mr. Jump, there is input lag most of the time I tap. I never had a problem with this with my iPhone 13 Pro, but with my iPhone 15 Pro, I do. I'm curious if the A17 Pro GPU architecture has not been well-optimized in many games since Apple switched to a new architecture with the A17 Pro chip. I emailed RobTopGames, but they have not responded yet. Also, on YouTube, when I watch a 60 Hz video sometimes, even with a good Wifi connection, the video stutters sometimes and drops to 30 Hz, almost as if the iPhone 15 Pro lacks the right video encoders or YouTube is not well-optimized for the A17 Pro. Is anybody else experiencing this with their iPhone 15 Pro? What is the solution to this?