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By Design
Under Consideration for 2022.3.X, 6000.0.X, 6000.1.X, 6000.2.X
Votes
1
Found in
2022.3.15f1
2023.2.4f1
2023.3.0a18
6000.0.0b11
6000.1.0a7
6000.2.0a1
7000.0.0a1
Issue ID
UUM-58308
Regression
No
In Play Mode, an extra Sync Call is made every frame when a GameObject has a Rigidbody 2D component
How to reproduce:
# Open the “Repro.zip“ project
# Open the “New Scene“
# Select the “Physics (2D)“ performance counter
# Enter the Play Mode
# Observe the “Sync Calls“ attribute in the Profiler Window
Expected results: 1 Sync Call is made every few frames and every other frame 0 Sync Calls are made
Actual results: 2 Sync Calls are made every few frames and every other frame 1 Sync Call is made
Reproducible in: 2022.3.15f1, 2023.2.4f1, 2023.3.0a18
Couldn’t test in: 2021.3.33f1 (no “Sync Calls“ attribute in Profiler)
Reproduced on: Windows 11 Pro
Not reproduced on: No other environment tested
Note: Sync Calls should be called every Fixed Update frame and not every frame
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Resolution Note:
For reference: https://docs.unity3d.com/6000.0/Documentation/Manual/2d-physics/physics-profiler/physics-2d-profiler-module-reference.html
"The physics system will perform a single Transform sync as the first part of performing a simulation step so this will always be at least one if a simulation occurred (see Simulation Count above). The physics system will also perform a single Transform sync per-frame if it is handling any Rigidbody2D interpolation."