I have been getting problems disabling Checksum Offload in a lot of LAN adapters manually. Does setting the DisableTaskOffload value in the registry disable all of the related parameters regardless of LAN card? ie [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
ie is the use of the LAN adapter offload capabilities controlled by Windows itself?
That should disable all offload settings of all nics. You need a reboot after create/modify the value