Remote ipconfig /release issue with powershell - powershell

Question

I have a powershell script that does an ipconfig /release and /flushdns then a shutdown command for my VMs. I do this before creating a snapshot. The script works but it doesn't work for multiple computers in a CSV because as soon as the ipconfig /release occurs it gets stuck on the same machine and waits for it to reconnect. Is there a way to break the script so that it forces to go to the next machine? It's doing the shutdown as well just not moving onto next machine. Code:
$Machines | foreach-object {
write-host $_.MachineName
Get-Service -Computer $_.MachineName -Name CcmExec | Stop-Service
Get-Service -Computer $_.MachineName -Name CcmExec | Set-Service -StartupType Disabled
Get-Service -Computer $_.MachineName -Name CcmExec
Invoke-Command -Computer $_.MachineName -ScriptBlock {
Add-LocalGroupMember -Group "Administrators" -Member $Using:Username
Get-ScheduledTask -TaskPath "\Microsoft\Configuration Manager\" | Disable-ScheduledTask
cmd.exe /c ipconfig /flushdns
cmd.exe /c ipconfig /release
cmd.exe /c shutdown -f -s -t 25
}
}

Answer 1

Just as I was laying down to go to sleep last night, this popped into my head. Why, how, I don't know!
What happens if you change
cmd.exe /c ipconfig /flushdns
cmd.exe /c ipconfig /release
cmd.exe /c shutdown -f -s -t 25
to
cmd.exe /c shutdown -f -s -t 300
cmd.exe /c ipconfig /flushdns
cmd.exe /c ipconfig /release
?
I would think any termination of the remote ran scriptblock would result in the caller continuing on to do other work.