1. Please specify the name and model of your USB webcam.
2. Do both server and client run the same OS - Windows 7 64-bit?
3. Over what network do you share the device - is it a local network or Internet?
4. Does everything work properly when the device is connected to the computer directly, without using USB to Ethernet Connector?
5. Does the problem occur when operating the webcam in loopback mode, that is when you share it with USB to Ethernet Connector and connect to it locally (from the same computer)?