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Thank you for reporting a bug to Unity. After reviewing the behavior, we've confirmed it aligns with the current design and intended use of the feature. We understand this may differ from your expectations or workflow. By default, the Input System merges consecutive events that are not button state changes (see https://docs.unity3d.com/Packages/com.unity.inputsystem@1.20/manual/event-merging.html for details). When you're doing smoothing or prediction, this event merging can affect the derived velocity and/or acceleration of the value. If you need the fine-grained per-event position and timestamp, you can disable event merging with: InputSystem.settings.disableRedundantEventsMerging = true; We will close this case as 'As Designed.' If you have feedback on how the feature could better meet your needs, please let us know - we value your input and consider it in future improvements.
Steps to reproduce:
1. Open the attached project “IN-139027”
2. Open Build Profiles (File → Build Profiles)
3. Make sure “SampleScene” is selected in the Scene List
4. Build and Run for your device
5. Walk towards one of the object in the scene
6. Observe the movement of the object when moving the camera
Actual result: The object is stuttering, and it looks a bit like ghosting effect
Expected result: The object is clear and the movement of the object is seamless with no ghosting effect
Reproducible with: 1.3.0 (2023.1.0a3, 6000.0.74f1), 1.19.0 (2022.1.0f1, 2022.3.75f1, 6000.0.74f1, 6000.3.13f1, 6000.4.2f1, 6000.5.0b3, 6000.6.0b2)
Built on: Tahoe 26.4.1 (M1 Max)
Not reproducible on: No other environment tested
Reproducible with these devices:
VLNQA00367 - Galaxy Z Fold2 5G (SM-F916B), CPU: Snapdragon 865 SM8250, GPU: Adreno 650, OS: 11
VLNQA00662 - Samsung Galaxy S26+ (SM-S947B), CPU: Exynos 2600, GPU: Xclipse 960, OS: 16
VLNQA00642 - Google Pixel 9a (Pixel 9a), CPU: Google Tensor G4, GPU: Mali-G715, OS: 15
VLNQA00382 - iPhone 7 (MN8Y2ET/A), CPU: A10, GPU: PowerVR GT7600 Plus, OS: 15.8.3
VLNQA00625 - iPhone 16 Pro Max (MYWX3QN/A), CPU: A18 Pro, OS: 18.3.1
Notes:
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