60% Memory usage with nothing really opened. (16 gb ram)

Run malware and virus scans for anything else running, sometimes they pose as "Critical" OS services and don't show up under processes. And your screenshot doesn't show the whole list, and it's at least 30-40% with what's showing.
 


Only one user, me. I ran malwarebytes and it detected nothing. I restarted and I'm at this now, http://prntscr.com/7k6my7 - I guess it's just a memory leak. :c