You may adjust the default STEP Export settings for both ACE & FAB 3000 to drastically reduce conversion time and file sizes.
Other suggestions include:
One File Per Layer:
Most designs have multiple layers - when they are all combined into a single STEP file the overall size can cause other 3D Simulation software to drastically slow down during their STEP import. To simplify the import of STEP files export a separate STEP file for each layer.
Crop the Design:
Many times only a section of the design needs to be extracted to 3D STEP for analysis and simulation. If this is the case, use both FAB 3000 and ACE 3000 ( command: Clip Area Wizard.. ) to crop out just the section of the design you require. This will drastically reduce file sizes and processing time.
What I observed so far is that the translator chokes on large designs.
But neither CPU nor memory are at their limits…