Extremely slow read and write times. Any suggestions!

I’m getting extremely slow read and write times to my drive.  My internet downloads are way faster than I can write to the drive.  Anyone, have any suggestions.  I’ve installed the latest firmware.  Not sure what I can do now.  One example is that I only get 500 - 600 kbs write speeds from a USB drive that is directly attached.


Type of NAS please ?

I have a WD My Book World Edition (White Light).