Hi :)
I am not sure, whether it is slow, but I guess it needs ~half the time with git...
Why am i complaining? I made a small tool, using your Libary (which is great).
I have a repo with ~50 Commits ~342 MB in size, one specific commit has 993 MB size, 31921 files in 881 folders. [Yes, you heard right]

I am just asking whether this is slow or quick.... [I guess slow, as I have a SSD and a HDD (the repo is on the HDD) and the HDD is not at fullspeed....]

Thanks for your answer.

PS: If you need my source, feel free to ask. The repo can be found @ http://dev-downloads.libreoffice.org/bibisect/win/
PS2: I am updating a progressbar [no difference in time, when I don't], and I use CheckoutModifier.Force