poor/terrible bandwidth on Dell N3024 switch

good morning all

I have a the N3024 in a pretty basic configuration- there is a single Avid *** (SAN solution) with a single Myricom 10Gb card connected to the front 10Gb port on the N3024 -there is no zoning, and nothing really special in the config- (config file below)

there are Windows7 and Mac OS clients connected to the switch via Cat6- Avid provides a Path Diagnostic tool to confirm bandwidth for video editing- and here is where things get weird-

any MacPro client connected via dual GigE gets the expected 190-200+MB/s on both READ and WRITE tests... 

but the Windows7 client will only get 25-30MB/s WRITE -oddly enough the READ bandwidth tests out at the normal 190-200MB/s over the dual connection

the N3025 has been reset to factory default and the Avid configuration re-applied- but no change to the test results- has anyone seen anything like this?

thanks again in advance

here is the config file:

!Current Configuration:

!System Description "Dell Networking N3024, 6.1.0.6, Linux 3.6.5-320b2282"

!System Software Version 6.1.0.6

!

configure

vlan 10

exit

slot 1/0 1    ! Dell Networking N3024

slot 1/1 10   ! Dell SFP+ Card

stack

member 1 1    ! N3024

exit

interface vlan 1

ip address dhcp

exit

interface vlan 10

ip address 10.93.50.1 255.255.255.0

exit

no passwords min-length

username "avid" password 18e9e8b7badf07435c3e1a78717e4b43 privilege 15 encrypted

!

interface Gi1/0/1 

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/2

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/3

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/4

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/5

spanning-tree portfast

switchport access vlan 10

exit              

!

interface Gi1/0/6

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/7

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/8

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/9

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/10

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/11

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/12

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/13

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/14

spanning-tree portfast

switchport access vlan 10

exit

!                 

interface Gi1/0/15

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/16

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/17

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/18

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/19

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/20

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/21

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/22

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/23

spanning-tree portfast

switchport access vlan 10

exit

!

interface Gi1/0/24

spanning-tree portfast

switchport access vlan 10

exit

!

interface Te1/0/1

spanning-tree portfast

switchport access vlan 10

exit

!

interface Te1/0/2

spanning-tree portfast

switchport access vlan 10

exit

!

interface Te1/1/1

spanning-tree portfast

switchport access vlan 10

exit

!

interface Te1/1/2

spanning-tree portfast

switchport access vlan 10

exit

snmp-server engineid local 800002a203f8b1562b98fa

exit