Here are few steps by which you can increase you Internet Download Manager’s Download Speed.
01. Open Internet Download Manager and click on “Downloads” as shown in fig 1.
02. Click on the options from the download menu (see fig: 2)
03. The new window will appear, Now click on Connections tab. shown in fig: 3
04. Now select the Default Max: Conn: Number to 16, as shown in fig. 4
05. Click OK, and you are done.