I've run into problems with other transfer methods with lots of small files, so I usually bundle the data into a monolithic rar file. FTP behaves poorly (not reaching bandwidth available), Http does very well, but I haven't felt like installing a server on all my machines; simple drag and drop over the network is unreliable with large files. This particular transfer was from a Windows 8.1 machine to a Mac Mini with wired connection through my router, maybe the cross-platform difference caused some of the "slowness" (though 1.1 MB/s isn't completely slow). With default buffer sizes,