Importing Huge OBJ's

I’m trying to import a zbrush sculpt that is 1.2GB’s. If I save to OBJ form and load into Zbrush it loads in about 30 seconds. Blender never seems to load it. Eventually it fills up my entire RAM and then resets the RAM usage to really low and seems to never do anything even though it appears to be doing CPU work.

Is there a better OBJ loader? Maybe Blender just sucks using python and zbrush is importing with c++?