Is it possible to create assemblies composed of sub-assemblies in .exe format? (.exe create from the CATIA Composer Package tool)

I would like to create an assembly for visualization in ".exe" format.

Unfortunately this assembly is much  too heavy (about 5gb) for my poor pro pc at 5000e (who knows why) I tried all types of formats nothing helps, it doesn't open properly, or Catia simply crashes.

So I made exes of each subset in order to assemble them afterwards but unfortunately I can't find any tool to do that!

If you have any ideas I'm interested

Thank you