Wifi disables when downloading through an accelerator

[whitdecrit]

Hello guys, small problem.

Whichever download manager I use, when ever it starts downloading for a bit it somehow manages to disable the wifi on my router. This makes it impossible for me to leave things going over night which is annoying. Does anyone have any idea what the problem is. It happens with IDM and Jdownloader.

Using a BT Home Hub.