The reason I mentioned it is that others handle 4 to 5 account using 2 to 3 laptops. They also spread them across terminals: Odin, Now, Nest. Somehow, power, bandwidth, etc, is not a major problem. Each account record is naturally exclusive.
Takes some tuning to multi-task in that way, but "trades in a go" also requires something similar. But you would know your situation best.