Angular 13 Build Times increased a lot

Which @angular/* package(s) are the source of the bug?

compiler-cli, compiler, core

Is this a regression?

Yes

Description

Since I upgraded some Projects from Angular 12 to Angular 13 the build times increased by factor 3x.

Same Project (Build by Github Actions): Angular 12 ➤ 6 min Angular 13 ➤ 18 min

I can see this in multiple Angular Projects. I did the upgrade with ng update.

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

No errors.

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 13.0.2
Node: 16.13.0
Package Manager: npm 8.1.3
OS: darwin arm64

Angular:
...

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.1300.2 (cli-only)
@angular-devkit/core         13.0.2 (cli-only)
@angular-devkit/schematics   13.0.2 (cli-only)
@schematics/angular          13.0.2 (cli-only)

Anything else?

No response

[JoostK]

Could you please share a reproduction of some sorts, a CPU profiling or anything else that might help us determine what is going on here; without this information we won’t be able to help you here.

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