I have 4 gb installed ram with 3.87 available. 325 gb free of 452 gb on HD. After windows 10 download I have had consistently high CPU and memory usage when using anything, including google chrome, playing games, whatever. I tried a clean boot, even went through and tried starting services 6 at a time, makes no difference. I uninstalled chrome and reinstalled a windows 10 64 bit version, makes no difference. My antivirus takes up a lot of memory, I tried turning it off, it makes no difference. I have tried so many things in the past week, I can't even remember. My windows updates are up to date. Desktop window manager, service host local system are both big hogs. Any suggestions?