f your worktrees have many files, you can make git status, git commit and git add faster by using the (experimental!) config setting core.useBuiltinFSMonitor = true. For users’ convenience, there is a checkbox in the upcoming Git for Windows v2.32.0 installer to do that.
With this config setting, Git commands that want to refresh Git’s index will query the built-in file system watcher (“FSMonitor”) which files have been changed, and only look at those. When there are tens of thousands of files in the worktree, this makes a difference because Git would otherwise have to look at the lastModified times of all files (“full scan”) to figure out which ones were modified since Git looked last. If the FSMonitor is not yet running, it is automatically started, and subsequent Git commands will benefit from it.