the cost of a network with bandwidth greater than 1gbps is pretty high, better use of the network would be dedicated 1gbps connections to each of your capable devices. having 4 of these network connections would all get the max speeds, and it wouldnt affect latency on any of the links.
I have seen this first hand it does make more sense due to the cost.
that sounds like you went on a trip to the lab...
it did make more sense doing it that way.