Why is my iPhone app stuck at 60fps on ProMotion devices?

This is often caused by a missing 'CADisableMinimumFrameDurationOnPhone' key in the Info.plist or because MTKView defaults to a 60fps preferred frame rate.

Does system state affect display performance?

Yes, system constraints such as Low Power Mode, Thermal Throttling, and Accessibility 'Limit Frame Rate' settings can force your app to 60fps regardless of code configuration.

Does this skill support the latest iOS features?

Yes, it includes specialized guidance for CADisplayLink (iOS 15+) and the newer CAMetalDisplayLink available in iOS 17+.

How can I fix micro-stuttering in my app?

The skill provides implementation patterns for frame pacing using APIs like present(afterMinimumDuration:) to ensure consistent intervals between frames.

Is this skill specific to Metal development?

While it features deep Metal integration (MTKView, CAMetalDisplayLink), it also covers general Core Animation and CADisplayLink optimization applicable to any high-performance iOS UI.

Axiom Display Performance

Name: Axiom Display Performance
Author: CharlesWiltgen

byCharlesWiltgen

•

233

Mobile Development

Optimizes iOS display performance and ProMotion frame rates for smooth, high-refresh-rate applications.

Acerca de

Axiom Display Performance is a specialized skill for diagnosing and resolving frame rate issues on modern Apple devices. It provides a systematic framework for unlocking 120Hz ProMotion support, configuring render loops via MTKView and CADisplayLink, and implementing advanced frame pacing to eliminate micro-stuttering. Whether you're building a graphics-intensive game or a high-performance UI, this skill helps you navigate system-level constraints like thermal throttling and Low Power Mode to ensure your app delivers a fluid visual experience.

Características Principales

Frame pacing and hitch reduction strategies
233 GitHub stars
Implementation of CADisplayLink and CAMetalDisplayLink render loops
ProMotion and 120Hz refresh rate configuration
GPU frame time budgeting and thermal throttling management
Systematic diagnosis for 60fps frame rate caps

Casos de Uso

Reducing micro-stuttering and jitter through advanced frame pacing
Debugging render loop issues in Metal-based games or high-performance UIs
Unlocking 120Hz ProMotion support for iPhone and iPad apps

Acerca de

Características Principales

Frame pacing and hitch reduction strategies
233 GitHub stars
Implementation of CADisplayLink and CAMetalDisplayLink render loops
ProMotion and 120Hz refresh rate configuration
GPU frame time budgeting and thermal throttling management
Systematic diagnosis for 60fps frame rate caps

Casos de Uso

Reducing micro-stuttering and jitter through advanced frame pacing
Debugging render loop issues in Metal-based games or high-performance UIs
Unlocking 120Hz ProMotion support for iPhone and iPad apps