Most likely a memory leak, also most likely your Killer Network Drivers, update them.
If you don't know where to find it, look up your motherboard, look for the support or download section, and look for the drivers.
Watch a video on youtube called "Memoryleak Fix WINDOWS 10 (And 8/8.1)" it worked for me.
"I can no longer sit back and allow Communist infiltration, Communist indoctrination, Communist subversion and the international Communist conspiracy to sap and impurify all of our precious bodily fluids. "
- General Jack D. Ripper.
my Killer Drivers are updated.
I followed the video and did what he said. My memory usage is back down to 10% with nothing running. The paged pool was over 6gb, its back down to 90 mb or less. i hope it did fix it. i probably wont know for a while as i play some games. im not sure how long it takes a memory leak to start doing something.
this is really the only problem ive had with windows 10.
If what doesn't kill you, makes you stronger. Then I should be a god by now.