I have a desktop wired in to the router. Sometimes it seems to hog the bandwidth even if it's not actually using any. It stops wifi devices getting a decent speed.
Today it caused my laptop, also wired in, to lose almost all speed. Usually shutting the browser does it but this time I had to shut down the PC. The badwidth on the laptop then jumped from <1MB to 70MB download. Restarting the PC has not affected it. It sounds like virus/malware but the scanners show the PC as being clean.
I've got BitMeterOS running and it's showing no strong spikes.
Any idea what the issue might be or what I can do to resolve it?