The Runtime Broker is a core process in Windows that manages permissions for Universal Windows Platform (UWP) apps. It typically uses minimal CPU resources but can spike to around 30% when a UWP app is launched to verify permissions. High CPU usage may persist even after closing an app, which can often be resolved by ending the process in Task Manager. If issues recur with a specific app, users can either uninstall it or check for updates. Disabling the Runtime Broker is not recommended, as it may destabilize the system and compromise security. Users can verify the legitimacy of the Runtime Broker process by checking its file location in the C:WindowsSystem32 directory. If the location differs, it may indicate malware.