Slow startup

Hi

My OC 084/Monterey hack used to boot in about 5-8 seconds from the Picker to the login prompt.

Last week I installed Xcode, Brew, Git and a few other development tools. Since then, the boot takes about 25-30 seconds to the login prompt.

This might be a question that belongs in /macOS but I need some advice on how to identify this (minor) issue.