Capped file transfer speed over network

[Digitalprintz]

I'm getting much lower transfer rates over my home gigabit LAN from two devices. I run a Gigabyte Brix J4105 as a plex/backup device with an external 10TB WD Elements. I used to have the device running on Ubuntu and it would transfer files using LANShare at gigabit speeds. I just recently switched it over to Win10 for ease of use, and I am getting about 15MB/s transfer rates, through the built in windows sharing, on what should be more like 100MB/s.

BRIX SS:

From Main Computer to Brix:

From Brix Drive 1 to Drive 2 showing its 200MB/s capable:

 

Main Computer SS:

From Drive 1 to Drive 2, showing its 200MB/s capable:

 

I'm at a loss. I've tried everything from disabling offloading to swapping cables and nothing changes it. The drives all support data transfer well in excess of gigabit, and both devices are running at gigabit speeds.

 

Anyone have any ideas?

[Radium_Angel]

31 minutes ago, Digitalprintz said:

external

Might this be the bottleneck?

[Digitalprintz]

3 minutes ago, Radium_Angel said:

Might this be the bottleneck?

Its not, as the drive does 210MB/s to other drives on the system.

 

Both drives transfer perfectly fine but the minute it goes over network its 15MB/s. Both devices are plugged into a gigabit switch, which also states that they're both running gigabit speeds

[jaslion]

The external drive is it power over only the usb port or does it have external power?

[Bombastinator]

Perhaps Time to check the various drivers and settings in windows.  One would assume default settings wouldn’t do something like that but they may have been inadvertently changed. 

[Digitalprintz]

5 minutes ago, jaslion said:

The external drive is it power over only the usb port or does it have external power?

External drive has its own power.

[Digitalprintz]

5 minutes ago, Bombastinator said:

Perhaps Time to check the various drivers and settings in windows.  One would assume default settings wouldn’t do something like that but they may have been inadvertently changed. 

I've went through checked to make sure drivers are updated on both computers and changed a dumb number of settings, reverted them all, changed others, changed even more. Nothing seems to have affected anything. Its starting to make me wonder whether there is a hidden setting somewhere for sharing transfer speeds.

[Digitalprintz]

Went ahead and did an iperf test too. Iperf is running at near gigabit, while the transfer is going at 12MB/s. I'm at a loss.