I have a STEP file, about 450-500 MB in size. I downloaded MoI 3D v3 trial to see if I could open it, but I'm not having any success with it.

What happens:
- I open MoI, select Import and select the file
- MoI starts to load the file. I can see in Task Manager that the RAM use increases
- When it comes to a certain point (about 2 GB RAM used), it stops for a few minutes, and then the RAM use goes down to about 1.7-1.8GB, and then it stops counting down.

The first time I saw this I let it run for about 10 more minutes. Nothing changed. Then I let it run for an hour. Nothing.

What's up with that? Is MoI generally not good for such large files? Or should it be able to take this no problem?