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Do not use idle process priority
This rule fires when processes set to ProcessPriorityClass.Idle.
Do not set process priority to Idle. Processes with System.Diagnostics.ProcessPriorityClass.Idle will occupy the CPU when it would otherwise be idle, and thereby block standby.
Set processes to ProcessPriorityClass.BelowNormal.
This rules should be suppressd only when Idle process priority is required and mobility considerations can safely be ignored.