Compilation/intellisense: dotnet9 much slower than netstandard2.0 (with timings)
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Impact-High
Needs-Repro
Regression
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- Dominant language
- F#
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Description
Timings:

The projects explicitly type all type arguments and all inputs but not all outputs (which could be added if it helps compilation time) and generally don't do anything fancy. They do use some overloaded methods which can be removed if it helps performance, and some op_Implicits (which are too convenient to remove).
Related issue: https://github.com/dotnet/fsharp/issues/17501
Some work being done in https://github.com/dotnet/fsharp/pull/18190
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