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Fixed in 2020.1.X

Fixed in 2018.4.X, 2019.3.X

Votes

41

Found in

2018.4

2019.2.0a1

2019.2.1f1

2019.3.0a1

2020.1.0a1

Issue ID

1178300

Regression

Yes

Semaphore.WaitForSignal under Canvas.BuildBatch causes a slow editor in Play mode

Visual Effects - Legacy

-

Steps to reproduce:
1. Open the attached project "Temp Project" from the ownCloud link
2. Open "Main Scene"
3. Turn on the Profiler window
4. Enter Play mode
5. Notice the Spikes from Semaphore.WaitForSignal

Expected results: Semaphore.WaitForSignal does not cause spikes in the Profiler window and making Editor slow
Actual results: Semaphore.WaitForSignal causes spikes in the Profiler window and makes Editor slow

Reproducible with: 2019.2.3f1, 2019.3.0b1, 2020.1.0a1

Note: 2019.1 breaks the project and its packages

  1. richardkettlewell

    Oct 16, 2019

    We are working on a fix for this.

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Comments (39)

  1. mushdevstudio

    Nov 09, 2019 20:12

    Same issue with 2019.2.11f1

  2. Hawk0077

    Nov 06, 2019 16:38

    Same issue with 2019.2.11f1

  3. TomiG12

    Nov 06, 2019 13:48

    Same issue, 2019.1.11

  4. mi427857

    Oct 14, 2019 03:51

    same issue 2019.2.6f1

  5. GooRain

    Oct 14, 2019 03:43

    Have this issue too, on 2019.2.6f1

  6. JohnnyBextor

    Oct 14, 2019 03:29

    Also have this issue, using 2019.2.6f1

  7. BmanStudio

    Oct 03, 2019 11:48

    Same here - 2019.2.0f1 Win10

  8. CyberRobin

    Sep 13, 2019 10:54

    Experiencing the same thing on 2019.1.10f1

  9. J8117

    Sep 08, 2019 17:15

    I also have this issue, using both versions 2019.2.4f1, and 2019.2.3f1

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