Opening scene performance is amazing!

[laurentlavigne]

4.7 scene load : 1 seconds
2020.1 scene load : less
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.
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2017 LTS: 10 seconds

[Peter77]

I think this would be related to the 2019.3 serialization improvements:

Performance Improvements To Text Serialization In 2019.3

Hey all! Alongside many other exciting changes Unity 2019.3 also includes some large improvements to our text serialization backend. What's Changed? Unity uses YAML as a text serialization format, up until 2019.3 we've been using an open source library called libYAML. libYAML has served us well but for speed and maintainability reasons we've been working on a custom internal library called UnityYAML. 2019.3a1 brings about the full switch to this custom library. Why does this mean for y…

Has there been more work on it going on that explains a 10x speedup?