I have a Western Digital: My passport ultra external hard drive with a USB 3.0 connection. It is pre formatted to NTFS from the factory.
I was getting really slow transfer speed of about 18 - 30MB/sec while moving (single)files to and from my computer; which is fitted with a Samsung EVO PRO SSD with 500GB storage capacity. So I looked my problem up on google and found a method for getting higher speed. I went into my device manager, selected my external disk and went into properties/Policies and chose "Better performance" rather than "Quick removal (default)"
I tried transferring a (single) big file again. This time the speed jumped up to around 480MB/sec, but just for a short moment, then it declined down to around 30MB/sec again. I think the speed realistically should be somewhere around 150MB/sec since that is the read/write speed of the hard drive. I am using it in USB 3.0 ports on my computer.
I read in another post that the slowing down part could be because the indexing of the copied files fill up some sort of transfer buffer. But that was about a usb flash drive. If that is the case however, what is the point of having fast connections and devices? I would be really greatfull for any help I can get. Thank you!