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Issue ID




[Input System] UI Components lags when using Input System UI Input Module together with Player Input Component

Package: Input System


How to reproduce:
1. Open the user's attached project "PlayerInput"
2. Enter the Play Mode
3. Click and drag Right or Left Stick (joystick)
4. Observe the Stick GameObject's behavior

Expected result: Stick GameObject is draggable smoothly
Actual result: Stick GameObject lags and get stuck

Reproducible with: 1.0.2 (2019.4.28f1), 1.1.0-pre.5 (2020.3.13f1, 2021.1.13f1, 2021.2.0b1)
Could not test with: 2018.4.36f1 (Input System is not introduced yet)

Reproducible on:
VLNQA00331, Huawei P20 lite (ANE-LX1), Android 9, CPU: HiSilicon Kirin 659, GPU: Mali-T830
VLNQA00321, Xiaomi MI 9 (MI 9), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00013 - Galaxy S6 Edge+ (SM-G928F), OS: 7.0.0, CPU: Exynos 7 Octa (7420), GPU: Mali-T760
Android Standalone
macOS Standalone

- To see an expected behavior, in the EventSystem GameObject disable Player Input Component

  1. Resolution Note:

    Symptoms described are due to project setup and are by-design and can be avoided by applying a PlayerInput and action map configuration that doesn't cause ping/pong effects between controller schemes by either using orthogonal configurations, disable auto-switching or adapt on-screen control visibility based on target platform.

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