I was having slow speeds transferring files across two pcs (sometimes3.3 kps)
hit upon this tip will searching google.
control panel/device manager/network adapters choose your ethernet adapter/properties
advance tab
large send offload (ipv4) to disable
large send offload (ipv6) to disable
speed increase to 54.4mps
There are many tweaks, some might help, some might make it worse.
SpeedGuide.net :: TCP Optimizer / Downloads
SG :: TCP Optimizer 4 DocumentationLarge Send Offload (LSO)
When enabled, the network adapter hardware is used to complete data segmentation, theoretically faster than operating system software. Theoretically, this feature may improve transmission performance, and reduce CPU load. The problem with this setting is buggy implementation on many levels, including Network Adapter Drivers. Intel and Broadcom drivers are known to have this enabled by default, and may have many issues with it.
Recommended: disabled
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