Here's the rest of the Itch log, I hope it's not that daunting to sift through.
I did turn off all antivirus apps when I downloaded through the app, even Windows Defender and Firewall, so that they couldn't share bandwidth.
I do have something turned on called IObit's 'Driver Booster,' though I'm not quite sure if this is the one causing trouble.
If there's really no solution I just might revert back to my browser-IDM plan and hope the zip doesn't come out corrupted...
Thanks anyway for taking the time for answering my questions! :)