CPU:
If you click on Autodetect then it'll be equally slow in terms of processing. If you know what you're processing, then passing --def ut_label will allow you to skip to auto-classification step and make things much faster.
IO:
If you use Copy then it'll physically copy the data on disk. If you use Move(on the same filesystem) then it'll just change the filesystem entry and that operation is instant regardless of file size.