Dynamic refresh rate issue

[konstantin-tcherkashin]

Noticed on iPhone 13 Pro (with dynamic screen refresh rate), SwiftUI project, iOS 16.1.

When nothing happens on screen for a couple of seconds, iOS lowers the refresh rate to a 10-12 hertz. Hence the animation have only 10-12fps.

• The issue only appears when a custom animationSpeed < 1 is applied;
• If any other animation is running on screen (including notifications and other system stuff), the issue is not reproducing;
• If screen recording is enabled, the issue is not reproducing (feels like screen recording forces 60fps system-wide).

Which Version of Lottie are you using?

Lottie 4.0.1, CoreAnimation rendering engine

Expected Behavior

Forcing system to sustain normal refresh rate

Actual Behavior

Dropping frames as screen refresh rate is lowered

[calda]

Can you share a sample project that reproduces this issue? I'm unable to reproduce this issue when testing with the Lottie example app on my iPhone 14 Pro. I always see the animation playing at 60fps, according to Instruments.

[github-actions]

This issue is stale because it is marked "can't reproduce" and has had no activity in the past week. Please comment with additional information, or this issue will be closed due to inactivity in one week.