Anyone know why CPU usage at 100% during downloads

Hi, I’m currently downloading Valley of the ancient and my CPU is at 100% making my system very unresponsive.
I have closed the launcher and rebooted system but the second the download starts CPU usage maxed out.

System specs
RTX 2070s
32gb ddr4 @3200
Windows 10

Rendering in project materials and shaders, its normal.