Hi. I know it has passed several days since you opened this thread:
I looked at the models, and my first impression was their size. 2MB or 4MB for none texturized models is quite big. Anyway, I opened the scenes, and let me tell you that they are rendered using Vray .10~.
Vray is an end scene renderer plugin used for high detailed 3ds max scenes. Usually for movies, or Architectural Designs, not for Gaming Purposes. In consequence all the designers out there often uses a high amount of polygons with this kind of files, due to the fact that they focuss in a high end quality product. Used only for ending product showcase scenes, and not for gaming.
Based on this, these models would be really complex to be adapted into Ragnarok Online. Personally I can render the scene and disable Vray on it, but, that will not change the amount of polygons these ones have. Optimize the model can be possible, but you will loose quality of the models -Think about lego mode -
Edit: The model has 150,000 polygons. Too heavy. Ragnarok limits are around 1,000 or in some cases 5,000 with low vertices.
Tip: Better that you look for models at .3ds extension, and not as a .max scene.