Happened to me today. Came back to my PC after turning it on and going to eat some breakfast. Noticed everything was running incredibly slowly and that it would constantly stop responding to load. Opening up Task Manager after a bit of a struggle and yes it was Feeds that was eating up all my CPU and RAM. Never had this happen before but looks like it's a pretty recent issue so I blame some sorta background Microsoft update breaking PC's again.
Specs:
Windows 10 Pro
Intel Core i5-7400
16GB RAM
256GB SSD System
1TB HDD + 1TB SSD
Nvidia GTX 1060 3GB (Latest drivers version 512.15 installed.)