I recently bought a TP-Link mini ethernet switch, there are a total of three computers connected to it and another ethernet cable connected to a router. Two of three computers get our full gigabit down, but mine is capped at around 550mb down? I'm wondering what the issue could be, I know it's something to do with my computer just not sure where to start. Not the splitter because I tried my computer in different ports and into the router even, but to no avail.