ad module vs adsisearcher.ps1

Import-Module ActiveDirectory
$func = Invoke-RestMethod https://gist.githubusercontent.com/santisq/bd3d1d47c89f030be1b4e57b92baaddd/raw/73952eceb82cd31b8cb9f2fd04e2a3ef3c428110/Measure-Expression.ps1
. ([scriptblock]::Create($func))

$adsi = {
    $searcher = [adsisearcher]::new(
        '(&(objectClass=user)(objectCategory=person))',
        [string[]] @(
            'DistinguishedName'
            'userAccountControl'
            'GivenName'
            'Name'
            'structuralObjectClass'
            'ObjectGUID'
            'SamAccountName'
            'ObjectSID'
            'sn'
            'UserPrincipalName'))

    class AdsiUser {
        [string] $DistinguishedName
        [bool] $Enabled
        [string] $GivenName
        [string] $Name
        [string] $ObjectClass
        [guid] $ObjectGUID
        [string] $SamAccountName
        [System.Security.Principal.SecurityIdentifier] $SID
        [string] $Surname
        [string] $UserPrincipalName

        AdsiUser([System.DirectoryServices.SearchResult] $searchresult) {
            $properties = $searchresult.Properties
            $this.DistinguishedName = $properties['distinguishedname'][0]
            $this.Enabled = ($properties['userAccountControl'][0] -band 2) -eq 0
            $this.GivenName = $properties['givenname'][0]
            $this.Name = $properties['name'][0]
            $this.ObjectClass = @($properties['structuralobjectclass'])[-1]
            $this.ObjectGUID = [guid]::new($properties['objectGuid'][0])
            $this.SamAccountName = $properties['samaccountname'][0]
            $this.SID = [System.Security.Principal.SecurityIdentifier]::new($properties['ObjectSID'][0], 0)
            $this.Surname = $properties['sn'][0]
            $this.UserPrincipalName = $properties['userprincipalname'][0]
        }
    }

    foreach ($user in $searcher.FindAll()) {
        [AdsiUser]::new($user)
    }
}

time -TestCount 5 -OutputAllTests @{
    adsisearcher = $adsi
    admodule     = { Get-ADUser -Filter * }
}