Windows 2012 Nodes - Slow CSV Performance - Need help to resolve my iSCSI issue configuration

I spent weeks going over the forums and the net for any publications and advice on how to optimize iSCSI connections and i'm about to give up.  I really need some help in determining if its something i'm not configuring right or maybe its an equipment
issue. 
Hardware:
2x Windows 2012 Hosts with 10 Nics (same NIC configuration) in a Failover Cluster sharing a CSV LUN. 
3x NICs Teamed for Host/Live Migration (192.168.0.x)
2x NICS teamed for Hyper-V Switch 1 (192.168.0.x)
1x NIC teamed for Hyper-V Switch 2 (192.168.10.x)
4x NICs for iSCSI traffic (192.168.0.x, 192.168.10.x, 192.168.20.x 192.168.30.x)
Jumbo frames and flow control turned on all the NICs on the host.  IpV6 disabled.  Client for Microsoft Network, File/Printing Sharing Disabled on iSCSI NICs. 
MPIO Least Queue selected.  Round Robin gives me an error message saying "The parameter is incorrect.  The round robin policy attempts to evenly distribute incoming requests to all processing paths. "
Netgear ReadyNas 3200
4x NICs for iSCSI traffic ((192.168.0.x, 192.168.10.x, 192.168.20.x 192.168.30.x)
Network Hardware:
Cisco 2960S managed switch - Flow control on, Spanning Tree on, Jumbo Frames at 9k - this is for the .0 subnet
Netgear unmanaged switch - Flow control on, Jumbo Frames at 9k - this is for .10 subnet
Netgear unmanaged switch - Flow control on, Jumbo Frames at 9k - this is for .20 subnet
Netgear unmanaged switch - Flow control on, Jumbo Frames at 9k - this is for .30 subnet
Host Configuration (things I tried turning on and off):
Autotuning 
RSS
Chimney Offload
I have 8 VMs stored in the CSV.  When try to load all 8 up at the same time, they bog down.  Each VM loads very slowly and when they eventually come up, most of the important services did not start.  I have to load
them up 1 or 2 at a time.  Even then the performance is nothing like if they were loading up on the Host itself (VHD stored on the host's hdd).  This is what prompted me to add in more iSCSI connections to see if I can improve the VM's
performance.  Even with 4 iSCSI connections, I feel nothing has changed.  The VMs still start up slowly and services do not load right.  If I distribute the load with 4 VMs on Host 1 and 4 VMs on Host 2, the load up
times do not change. 
As a manual test for file copy speed, I moved the cluster resources to Host 1 and copied a VM from the CSV and onto the Host.   The speed would start out around 250megs/sec and then eventually drop down to about 50/60 megs/sec.  If I turn
off all iSCSI connections except one, it get the same speed.  I can verify from the Windows Performance Tab under Task Manager that all the NICS are distributing traffic evenly, but something is just limiting the flow.  Like what I stated on top,
I played around with autotuning, RSS and chimney offload and none of it makes a difference. 
The VMs have been converted to VHDx and to fixed size.  That did not help.   
Is there something I'm not doing right?   I am working with Netgear support and they are puzzled as well.  The ReadyNas device should easily be able to handle it. 
Please help!  I pulled my hair out over this for the past two months and I'm about to give up and just ditch clustering all together and just run the VMs off the hosts themselves. 
George

A few things...
For starters, I recommend opening a case with Microsoft support.  They will be able to dig in and help you...
Turn on the CSV Cache, it will boost your performance 
http://blogs.msdn.com/b/clustering/archive/2012/03/22/10286676.aspx
A file copy has no resemblance of the unbuffered I/O a VM does... so don't use that as a comparison, as you are comparing apples to oranges.
Do you see any I/O performance difference between the coordinator node and the non-coordinator nodes?  Basically, see which node owns the cluster Physical Disk resource... measure the performance.  Then move the Physical Disk resource for the
CSV volume to another node, and repeat the same measure of performance... then compare them.
Your IP addressing seems odd...  you show multiple networks on 192.168.0.x and also on 192.168.10.x.   Remember that clustering only recognizes and uses 1 logical interface per IP subnet.  I would triple check all your IP schemes...
to ensure they are all different logical networks.
Check you binding order
Make sure you NIC drivers and NIC firmware are updated
Make sure you don't have IPsec enabled, that will significantly impact your network performance
For the iSCSI Software Initiator, when you did your connection... make sure you didn't do a 'Quick Connect'... that will do a wildcard and connect over any network.  You want to specify your dedicated iSCSI network
No idea what the performance capabilities of the ReadyNas is...  this could all likely be associated with the shared storage.
What speed NIC's are you using?   I hope at least 10 GB...
Hope that helps...
Elden
Hi Elden,
2. CSV is turned on, I have 4GB dedicated from each host to it.  With IOmeter running within the VMs, I do see the read speed jumped up 4-5x fold but the write speed stays the same (which according to the doc it should).  But even with the read
speed that high, the VMs are not starting up quickly.  
4. I do not see any difference with IO with coordinator and non coordinator nodes.  
5.  I'm not 100% sure what your saying about my IPs.  Maybe if I list it out, you can help explain further.  
Host 1 - 192.168.0.241 (Host/LM IP), Undefined IP on the 192.168.0.x network (Hyper-V Port 1), Undefined IP on the 192.168.10.x network (Hyper- V port 2), 192.168.0.220 (iSCSI 1), 192.168.10.10 (iSCSI2), 192.168.20.10(iSCSI 3), 192.168.30.10 (iSCSI 4)
The Hyper-V ports are undefined because the VMs themselves have static ips.  
0.220 host NIC connects with the .231 NIC of the NAS
10.10 host NIC connects with the 10.100 NIC of the NAS
20.10 host NIC connects with the 20.100 NIC of the NAS
30.10 host NIC connects with the 30.100 NIC of the NAS
Host 2 - 192.168.0.245 (Host/LM IP), Undefined IP on the 192.168.0.x network (Hyper-V Port 1), Undefined IP on the 192.168.10.x network (Hyper- V port 2), 192.168.0.221 (iSCSI 1), 192.168.10.20 (iSCSI2), 192.168.20.20(iSCSI 3), 192.168.30.20 (iSCSI 4)
The Hyper-V ports are undefined because the VMs themselves have static ips.  
0.221 host NIC connects with the .231 NIC of the NAS
10.20 host NIC connects with the 10.100 NIC of the NAS
20.20 host NIC connects with the 20.100 NIC of the NAS
30.20 host NIC connects with the 30.100 NIC of the NAS
6. Binding orders are all correct.
7. Nic drivers are all updated.  Didn't check the firmware.
8. I do not know about IPSec...let me look into it.  
9. I did not do quick connect, each iscsi connection is defined using a specific source ip and specific target ip.  
These are all 1gigabit nics, which is the reason why I have so many NICs...otherwise there would be no reason for me to have 4 iscsi connections.  

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