I have Windows 10, but have an older two core AMD 450 cpu Lenovo Ideapad, with only 6 Gb of ram, and I am also experiencing high CPU utilization. The Media Foundation Protected Pipeline.EXE is using most of my CPU process while watching the movie "Entourage 2015" that I rented from the Microsoft App store causing the movie to intermittently jitter and pause, and the audio to cut out, I am sure it's the DRM built into the movie causing the issue. I normally use VLC media player, and do not experience this issue with other non Microsoft downloaded movie's and DVD rentals.
As of 11/24/2015 I have all of the latest updates from Microsoft, and I am on build 10586. I only run Microsoft Defender, and have no other applications installed other then what comes with Windows 10 and I am on build number 10586.
Regards, Jose F. Medeiros, MCP+I, MCSE, NT4 MCT