Recently I upgraded from Windows 8.1 to Windows 10 and the other day I noticed my Computer running really slow. After checking task manager I can see my RAM usage is stuck at 90% being used, even after just booting the computer. I never had any issues like this on Windows 8.1 I'm pretty sure. When I try to look at what is using the RAM I can only see my normal programs not using much and "System" using around 500mb. I understand Task Manager does not show everything and tried to install RAMMAP however it didn't work. Any suggestions would be greatly appreciated!