Strange issue with Powershell using up huge amounts of memory.

$MyPath=$MyInvocation.MyCommand.Path | Split-Path
. $MyPath'\!PerfLogger_Include.ps1'try{get-job | remove-job -force}catch{}

Createfolder($MinFolder)#Get All the computers from the Monitor List. $ServersToMonitor= import-csv $mypath'\MonitorList.csv'#Launch all Threads. $ServersToMonitor | % {if ($_.Name -ne$Null){$silent= start-job -Filepath .\PerfLogger-Thread.ps1 -argumentlist $_.Name.tostring(),$_.ServerType.tostring(),$MyPath,$_.MinutesToSample,$_.SamplesPerMin#start-job -ScriptBlock {PerfLoggerThread($_.Name,$_.ServerType)
        add-content $LogFile"$(Date)-Starting thread for $_.Name.tostring() - Launcher"
	}
}#Keep shell open while jobs are running.# get-job | wait-job #### Seems to create a memory leak. $loop="Indefinitly"do{
    start-sleep -m 1440
} while ($loop-ne$null)

Param([string]$Computer,[string]$ServerType,$MyPath,[int]$Minutes,[int]$SamplesPerMin)
. $MyPath'\!PerfLogger_Include.ps1'

#Get Counters to monitor
add-content $LogFile "$(Date)-Getting Counters for $Computer"
[int]$Samples = $Minutes * $SamplesPerMin
[int]$SamplesInterval = ($Minutes * 60)/($Samples)
$myCounters = GetPerfCounters -computer $Computer -ServerType $ServerTypedo {
    # Gather Performance Data from Machine (Set Sample Interval for time between samples and Max samples for total samples to take before returning)try{$perf = Get-Counter -Counter $mycounters -ComputerName $Computer -SampleInterval $SamplesInterval -MaxSamples $Samples}catch{add-content $LogFile "$(Date)-!!!!!!!!!! PerfData from $Computer was not returned. $ERROR"}
    #Add Performance Counters to Log File
    $StoreLogs = $MinFolder + '\' + $Computer+"-%%$(Get-date -f yyyy-MM-dd-HH)%%"
    Createfolder($StoreLogs)try{        #add-content $LogFile "Saving PerfData for $Computer"
        $perf | export-counter -path $StoreLogs\$Computer'-'$(Get-date -f yyyy-MM-dd-HH-m-s).blg -FileFormat blg -force
     }catch{add-content $LogFile "$(Date)-!!!!!!!!!! Could Not save Perfdata for $Computer. $ERROR"}
}while($i -ne 1)