iPhone Thermal Throttling in Real-Time AR

iPhone experiences thermal throttling when running ARKit, camera, and GPU at full load for minutes. The device dims screen and reduces rendering quality in real time without crashing. Live surfel blocks in AR apps begin to slide off walls as performance drops. iOS silently manages thermal limits without user notification. Developers building AR apps with sustained camera and GPU usage must account for performance degradation. This behavior occurs under continuous full-load conditions.