Scanning non-Windows machines like Linux, Unix and Mac computers, VMware servers, printers, switches etc takes very little network traffic. One full first-time Windows computer scan takes 4 MB if you are scanning without a scanning agent. Subsequent scans require less traffic, as data that is unlikely to change is not rescanned all the time.
If you scan your Windows computers without a scanning agent, you'll see more traffic being generated from your Lansweeper server to the client computers, as opposed to from the clients to the server. Lansweeper pulls Windows computer data from WMI (Windows Management Instrumentation), a management framework built into Windows operating systems. It takes a lot more traffic to set up the various WMI connections to the client machine than it does to send the scanned data back. By default, Lansweeper uses as much bandwidth as it can get.
Here are some best practices for reducing or spreading out bandwidth usage: