Thank you for your speedy replies. I found that the bottleneck was the RAM on the computer I was using. The import process has sped up dramatically after upgrading the computer to 16 GB. The asset I was trying to import was a massive Solidworks assembly file (entire folder for the project is around 8GB) that I converted. I managed to combine and reduce the polygons after conversion, but it’s still pretty hefty. I will be breaking the actual machine into 2 or 3 pieces before import in the future.
Thanks again,