CmdID / PowerShell / Cmdlets / Set
Set-WBPerformanceConfiguration
Sets the current volume backup performance settings. Windows Server PowerShell reference
From the Windows Server PowerShell reference 3 parameters Its page in the reference
Parameters
-OverallPerformanceSettingIndicates that the changes affect the global performance setting.-PerformanceSettingSpecifies the performance settings for which this cmdlet sets.-VolumeSpecifies the object for which this cmdlet sets the current performance settings.