There it is. is chugging 15 Mbps. Windows is secretly uploading updates to other PCs on the internet (a feature called peer-to-peer updates). You right-click, end the task temporarily, and your Zoom clears up.

You download Wireshark. It’s like putting a wiretap directly on your network card. You select your Wi-Fi adapter, click "Start," and suddenly see every packet: DNS queries, ARP requests, a weird SYN packet to an unknown port 4444.

End of story.

You need more detail. Type "Resource Monitor" into the Start menu. Open it.

Resource Monitor is live only. The moment you close it, the data vanishes.