CodeQL being very slow when passed --command parameter

I am trying to run CodeQL on ServiceFabric codebase and its being very slow when I pass `--command`. My understanding is when we pass `--command` CodQL invokes this command at the source code directory and analyzes the output. Running `sfbuild -release` takes 2 hours and running it as part of CodeQL took ~48 hours. I am wondering why it's being slow? is there a way to run "sfbuild -release" separately and then pass the output to CodeQL afterwards? thank you.

```shell
codeql database create --language=cpp --source-root=C:\WindowsFabric testcodeqldb --command="sfbuild -release"
```

Start with the reported `codeql database create --language=cpp --source-root=C:\WindowsFabric testcodeqldb --command="sfbuild -release"` invocation and compare its behavior with running `sfbuild -release` separately. Investigate the documented `--command` workflow and whether its output can be supplied afterward. Done means explaining the 48-hour runtime and providing a supported workflow or a reproducible limitation.

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