Network hangs when copying files over the network?

Question

Network administration

I was looking for a problem for a long time, I killed it all day until I found an indirect reason, It turned out that if someone copies a large amount of data over the network, one employee starts to freeze the network, and she works on a remote connection, everything starts to lag and after a while everything falls off if you stop copying files to In the same second, everything will magically work for her. Connecting to a remote work her table goes through several switches, so the question of why this happens can be in the switch (model allied telesis AT-GS950 / 48 Gigabit Ethernet WebSmart Switch)