Add-CMDeviceCollectionDirectMembership Slow

DeviceCollPerformance1

<#

Example of how to create a Device Collection and populate it with computer objects

The Slow way. <Yuck>

#>
[cmdletbinding()]
param(
    $CollBaseName = 'MyTestCol_03_{0:D4}',
    $name = 'PCTest*'
)

foreach ( $Count in 5,50 ) {

    $CollName = $CollBaseName -f $Count

    write-verbose "Create a collection called '$CollName'"
    New-CMDeviceCollection -LimitingCollectionName 'All Systems' -Name $CollName | % name | write-Host


    Measure-Command {

        Write-Verbose "Find all Devices that match [$Name], grab only the first $Count, and add to Collection [$CollName]"
        get-cmdevice -name $name -Fast | 
            Select-Object -first $count |
            Foreach-Object {
                Add-CMDeviceCollectionDirectMembershipRule -CollectionName $CollName -ResourceId $_.ResourceID  -verbose:$False 
            }

    } | % TotalSeconds | write-Host
}