How do I speed up this query by ignoring computers off the network faster?

Question

Good afternoon,
I am running the below script to query the entire domain for local admins. Could anyone reccomend a way to speed this up by more quickly skipping computers that aren't on the network? Currently, every time it reaches a computer that is not on the network
it hangs for up to 20 seconds (computers on the network return the data in less than a second). If I could decrease the ping time-out time, I could speed up this query tenfold.
Script pasted below - Thank you!!!
$Searcher = New-Object DirectoryServices.DirectorySearcher([ADSI]"")
$Searcher.Filter = "(objectClass=computer)"
$Computers = ($Searcher.Findall())
md C:\Reports\IBX_Local_Admins_ALL
Foreach ($Computer in $Computers)
$Path=$Computer.Path
$Name=([ADSI]"$Path").Name
write-host $Name
$members =[ADSI]"WinNT://$Name/Administrators"
$members = @($members.psbase.Invoke("Members"))
$members | foreach {$_.GetType().InvokeMember("Name", 'GetProperty',
$null, $_, $null) | out-file -append C:\Reports\IBX_Local_Admins_ALL\$name.txt

Answer 1

This version will not fail no matter what is in the group.
function Get-LocalAdmins{
[CmdLetBinding()]
Param(
[Parameter(
Mandatory=$true,
ValueFromPipeline=$true,
Position=0
)]$computer
Process{
Write-Verbose "Polling system: $computer"
if(Test-Connection $Computer -quiet -count 1){
$group=[ADSI]"WinNT://$computer/Administrators"
$group.Invoke("Members") |
ForEach-Object{
New-Object PsObject -Property @{
Computer=$Computer
aDSPath=$_.GetType().InvokeMember('aDSPath', 'GetProperty',$null, $_, $null)
#UserID=$_.GetType().InvokeMember('Name', 'GetProperty',$null, $_, $null)
}else{
Write-Warning "System not found: $computer"
$computers=([adsisearcher]'(objectClass=computer)').FindAll() |%{$_.Properties['name']}
$computers | Get-LocalAdmins -verbose
¯\_(ツ)_/¯
Hi JRV,
Thank you for your help so far! When I ran the above version, it seemed to be going fine but it stopped at a certain point saying the script was "successful", but it only queried 148 computers. I should note that it is also the same 148 computers each time
I run it. No errors, it just stops and says successful. Any ideas?
TY!