Fix slow animation mode on Android #6014
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@piaskowyk I believe PR title is confusing, I read it like "improve the performance of -normal- animations" 😅 |
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Hey, this PR is about our feature that slow down all animation for debugging purposes 😅 Screen.Recording.2024-05-14.at.15.01.44.mp4 |
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bartlomiejbloniarz
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Jun 11, 2024
...ges/react-native-reanimated/android/src/main/java/com/swmansion/reanimated/NodesManager.java
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tjzel
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The animations are so slow now they made the 'after' video 3x longer!
...ges/react-native-reanimated/android/src/main/java/com/swmansion/reanimated/NodesManager.java
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This was referenced Jul 25, 2024
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Jul 28, 2025
## Summary This PR fixes the issue of slow animations on Android. We utilize two different sources of timestamps on Android, so we need to slow down both of them instead of just one to fix the problem. Previously, almost all animations were canceled immediately after starting because the current frame timestamp was 10 times higher than the slowed-down start timestamp. | before | after | | --- | --- | | <video src="https://github.com/software-mansion/react-native-reanimated/assets/36106620/0221e94e-b1b7-48d2-9092-85265dbb36b0" /> | <video src="https://github.com/software-mansion/react-native-reanimated/assets/36106620/5dcd926e-8c94-44e5-a5a5-7b8e60ebf333" /> | --------- Co-authored-by: Wojciech Lewicki <[email protected]>
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Summary
This PR fixes the issue of slow animations on Android. We utilize two different sources of timestamps on Android, so we need to slow down both of them instead of just one to fix the problem. Previously, almost all animations were canceled immediately after starting because the current frame timestamp was 10 times higher than the slowed-down start timestamp.
Screen.Recording.2024-05-14.at.14.30.22.mov
Screen.Recording.2024-05-14.at.14.15.50.mov