CAD tip # 6660:

The optimization of 3D objects can be invoked either through the "ProOptimizer" modifier - for selected objects in your scene, or as a batch optimization tool ProOptimizer, which can simplify in one go all .max and .obj files in a selected folder.

This batch tool can be run from the Utilities panel. Click on the button "More..." and in the list of utilities choose "Batch ProOptimizer". In the panel then click on the button "Batch Optimization" and in the dialog of this utility select he input and output files and a number of parameters controlling the method of optimization.