Once a single conversion is complete upoad the conversion log (click on the logs link on the main GUI page) or post the link here to it. I need to see why and where it's taking time and what settings you're using. There could be many reasons.
Have you set the priority to Nomal or low? Have you limited the CPU's that MCEbuddy can use?
Also open your task manager, sort by CPU utilization and post a screenshot here. Are you running any other services/programs in the background.
