SAMBA Shares Slow!

Volumio X86 running on Gigabyte BRIX box with USB 3 hard drive.

I share the USB drive with SAMBA so I can transfer library updates from my main PC using sync software.

SAMBA is very slow doing transfers. < 300 kb/sec.

Are you connected via a wireless or wired connection?

Tried both! Either way is slow and about the same speed.