[john5193]

You aren't the only one with this issue. I've done every optimization on my windows system and am having hang ups and freezez too. They normally only last one or two seconds, but there have been the occasional 5 second freeze. Can't post a sandra at the moment, but I think it's a PT thing and not system thing. PT 9 did not have this issue. Do you have Delay Comp set to max or long? It could very well be the system having to reset the compensation on the max setting.