I have not encountered that problem but based on that web page here is something that you can try. I defined a DCS named Perftest, and used this script to update the actions of the task. The task was updated, but I don't know if it's going to work or not.
$Task = Get-ScheduledTask -TaskName Perftest
$taskAction = New-ScheduledTaskAction -Execute 'C:\windows\system32\rundll32.exe' -Argument 'C:\windows\system32\pla.dll,PlaHost "{Name}" "$(Arg0)"'
$Task.Actions = $taskAction
$Task | Set-ScheduledTask