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Won't Fix

Votes

0

Found in

2018.3.0a5

2018.4

2019.2

2019.2.11f1

2019.3

2020.1

Issue ID

1196160

Regression

Yes

Sphere GameObject unexpectedly bounces from a slight curve in a Mesh when going at a high Velocity

Physics

-

How to reproduce:
1. Open the attached project("case_1196160-Project.zip")
2. Open the Scene labeled "SampleScene"
3. Enter the Play Mode
4. Inspect the moving "PlayerSphere"

Expected result: The Sphere rolls along the ramp.
Actual result: The Sphere unexpectedly bounces from the slight curve in the Mesh.

Reproducible in: 2018.3.0a5, 2018.4.13f1, 2019.2.12f1, 2019.3.0b10, 2020.1.0a12
Not reproducible in: 2017.4.34f1, 2018.3.0a4

Workaround: Decrease the Fixed Timestep in Project Settings->Time.

Note: from Unity 2018.3.0a5 to Unity 2018.4.13f1, the Sphere GameObject moves at a lower Velocity when applying the workaround.

  1. Resolution Note:

    The new PhysX requires higher simulation frequencies to simulate this case at the required accuracy

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