Hi Teejk01,
Thanks for posting. The best way to track what may have caused the spike is Glasswire as suggested by Gwalk. It will track all your usage on the machine it is installed on and let you know exactly what program or service used it as well. There is still much we do not know about Windows 10 but it definitely could be some type of update to the OS and other programs. Especially since you mentioned it seems to happen every month around the same time. If you guys have more than one computer glasswire will need to be installed on all computers. I hope this helps.
Thank you,
Chris