The latest update started for my Friday (today is Sunday Mar 3,19). Since then, it has consumed 20% of my CPU average and is sending close to 1000 bytes (bit bits) of network update every second. Why all the activity in my machine? Are you planning on fixing this?
GlassWire does not normally use 20% CPU and has no ability to send 1,000 bytes of network activity itself. I suggest a scan for malware on your PC using an antivirus.