DEVICE MANAGER AND LOOK AT ADVANCED NETWORK DEVICES:
Go to Start->Control Panel->Device Manager->Network adapters->Your adapters name Ethernet Controller , right-click then select Properties. On the Advance tab, find property Large Send Offload (IPv4) and change its value to Disabled then click OK.
If you have a Large Send Offload (IPv4) v2 try setting that to Enable (with the other one disabled of course).
Try the disabling both IP4 and IP4 v2.