Sorry for my English.
We have a network. For the last two weeks when any PC is downloading a file from the Internet other PCs cannot connect to the Internet. Looks like the router sets all the bandwidth to the connected PC.
I restored router's config file from 2013 and yet the problem prevails.
I have both LAN and WLAN connections because the network has 30-40 computers. The router is Vigor 2700 series.
Any help or idea is useful for me. Thanks a lot.