I have a small network of 5 clients, a server and 2 printers running on win7homegroup network with DHCP running. I have 2 clients sharing a wired port via a switch. all connects to another switch and then to a router for internet access. When one of the clients attached to the switch (with 2 comps sharing wired port) logs into veterinarian practice software, it makes everything run very very slow. When they are not logged in the other 3 clients run like a scalded cat. What could be causing the slow down?