Unity Issue Tracker - Using .NET API 4.x increases performance spike in Scripts twice when selecting an object with a script for the first time

Fixed in 2019.3.X

Fixed in 2019.2.X

Votes

0

Found in

2017.3.0a1

2018.2.14f1

2018.3.0a1

2019.1.0a1

2019.2.0a1

Issue ID

1099027

Regression

No

Using .NET API 4.x increases performance spike in Scripts twice when selecting an object with a script for the first time

Scripting

-

Nov 08, 2018

Reproduction steps:

1. Open "MinimalRepro.zip" project
2. Open the Profiler and enable "Deep Profile" and "Profile Editor"
3. Record and Enter Play mode
4. Click on "GameObject" in the Hierarchy window
5. Turn off Record and Exit Play mode
6. Notice a spike of ~800ms in Scripts
7. Change the Scripting Runtime Version to .NET API 4.x
8. Repeat steps 2-6
9. Notice a spike of ~1600ms in Scripts

Expected Result: .NET API 4.x has the same performance as .NET API 3.5
Actual Result: Using .NET API 4.x decreases performance in Scripts twice

Reproduced with: 2019.2.0a4, 2019.1.0b2, 2018.3.5f1, 2017.4.20f1

Note:
The script attached to the "GameObject' just has a public GameObject

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