Hi,The first time I used Ultimate Defrag it was running long, but I changed the % of resources used from "auto" to "100". After I did that, it performed much faster and completed a consolidate defrag in ~ 35 minutes or so. However, my system is pretty much dedicated solely to FSX so, not sure if this will help you or not.You may have already adjusted this setting but if not you might want to give it a try.Regards,Vic