said by DennisB :
I generally get about 350 KB/sec when downloading files if that is the only heavy traffic I have on the network
at the time, however if I am connected to my work VPN on my work laptop the fastest I can download a file on the other computers
on my network is about 200 KB/sec.
I'd bet dollars to donuts your internet traffic while connected to the work VPN is tunneled back to your
workplace. Do a route print on your work laptop, or wireshark your work laptop's traffic from another
device on your home network.