Slow file COPY() to destination with many files existing

There some other topics here discussing COPY. I pasted one below. Using API SHFileOperation would provide a Window with progress and allows you to pass a list of multiple file names.

I had someone tell me START() a new Thread for each COPY will run much faster. I never tried it, but that is what RoboCopy does that makes it faster. I would not Start more than 8 or 12 so now you need to manage threads.