I have absolutely no proof of this, just a gut feeling...
I suspect (in fact I'm almost certain) that Vue converts all "foreign format" imports to its own internal format (.vob, probably). There could be a difficulty with the transformation from .obj to .vob, which requires more time to resolve, especially if .vob is a format which differs substantially from .obj, 'cos of emphasis on some sort of performance optimisation (possibly in memory used)...

Or not...

Cheers,
Diolma
Edited to add the obvious: Once a .obj has been loaded (and if you're intending to use it again in a different pic), save as .vob... But you knew that already, I suspect..

Message edited on: 03/23/2006 14:58