Thanks for the reply guys,
No issues with the USB2 connection, its just the transfer speeds aren't as high as I'd like them to be, and ideally would want to connect all camera's via USB3 for times sake (shooting in quick repetition).
I'd guess its an issue with current generation USB3.0 motherboard controllers and/or the USB3.0 drivers themselves that don't allow for many camera's to be connected.
I thought maybe trying to connect the camera's via ethernet adapters would alleviate the problem looking at the responses its easer said than done.
Matt