How to change the update speed to normal in windows 8 task manager using powershell command or registry

Function Reset-TaskManagerPreferences() {
	$OSVersion = [System.Environment]::OSVersion.Version
	If (($OSVersion.Major -gt 6) -Or (($OSVersion.Major -eq 6) -And ($OSVersion.Minor -ge 2))) {
		$PreferencesPath = "HKCU:\Software\Microsoft\Windows\CurrentVersion\TaskManager"
	} Else {
		$PreferencesPath = "HKCU:\Software\Microsoft\Windows NT\CurrentVersion\TaskManager"
	}
	If ($TaskManager = Get-Process -Name TaskMgr -ErrorAction SilentlyContinue) {
		$TaskManager.Kill()
		$RestartTaskManager = $True
	} Else {
		$RestartTaskManager = $False
	}
	Remove-ItemProperty -Path $PreferencesPath -Name "Preferences" -ErrorAction SilentlyContinue
	If ($RestartTaskManager) {
		& "${ENV:Systemroot}\system32\taskmgr.exe"
	}
}

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Hi.. The script is to delete the preferences and then restart the task manager. Is there any straight forward method to change the binary data of preferences reg value or any other way to change the "update speed" in the view tab of task manager. The reason for asking specific change only w.r.t update speed is we have other settings view settings set and syspreped. IF I get the direct way to only change the "update speed" in task manager view option to "norma" that will be of great solution.

Unfortunately, there's no straight forward way to do that; the format of the binary blob in the registry is undocumented.

Thanks mate... but one last question, what if I export the preferences reg from another system and merge it in the problematic system, will there be any functional problem of task manager. The only thing I prefer this is I do not want to clash other settings. killing, deleting and re launching the task manager as in the script, makes me to bring with the default options, like only "fewer" details will be shown.
If you know any impact please let me know, If there is no impact please confirm if registry merge is fine.