Internet speeds don't add I am downloading two files from Internet. Their combined speed would be around 80Kbps, but the activity monitor shows a huge data transfer, more than 200Kbps. I already turned off auto-update. Below is the screenshot of downloading in the browser and the activity monitor:



Please guide me; what can be wrong here? Maybe my knowledge is not accurate about this.

I am using macOS Sierra 10.12.4.
There is nothing wrong here.

Cyberduck &amp; LibreOffice downloads are displaying their average speed since the beginning of the real download operation.

Activity Monitor is displaying an instantaneous speed which will take into account these 2 downloads, but also all the background network traffic your Mac is always doing (ex.: netbios, Bonjour, ntp). This instantaneous speed is highly variable and depend mostly of this background network traffic.