If your RAM use is high and your PC is running slowly, an app may be the cause of the problem. Microsoft suggests to kill the Runtime Broker Process if it uses more than 15% of memory. It should only use a few megabytes of memory, but in some cases, a faulty app might cause Runtime Broker to use up to a gigabyte of RAM or more. Runtime Broker is a Windows process in Task Manager that helps manage permissions on your PC for apps from Windows Store. It may also use a lot of memory, especially if a faulty app is the root cause of the issue: Reports started to come up as early as 2015 that Runtime Broker was causing high CPU loads on Windows 10, and as early as 2012 that it was using a lot of memory on Windows 8.
