Multithreading and Preview

Hello,

I have migrated an articulate project to a high end PC that we normaly use for filmmaking. 

So I was slightly confused when the PC seemed to perform the same or possible even worse with Articulate 360 then the previous low-end office laptop. 

Creating a project preview didn't seem to go any faster - and the computer was only using a maximum of ~9% of it's CPU power. It appears that Storyline is using only two or three of the available 16 cores. The RAM usage seemed surprisingly low, too.

Is there a setting to enable multi-threading or is dual/quatro core usage the maximum that is supported?