[riskable]

On Windows git performance isn't the greatest due to the sheer number of tiny little files (NTFS is absolutely awful). If you have a lot of small commits the number of tiny files grows and grows and grows and git can feel really slow compared to something like fossil. Especially if you're regularly copying your repo from one filesystem/machine to the next (without compressing it into something like a .zip first).

[stjohnswarts]

You can't run "git gc" sporadically on your repo?

[themerone]

The issues with git performance on Windows are a lot more complicated than the number of files.

The gc command doesn't help, and git automatically runs it after some operations.