Hi Brian, didn't sound like a complaint, sounded more like a feature request to me! :)

There are quite a few different features to add to improve large file handling, so it's kind of something that will improve in chunks as certain things get added over time.

This next beta actually has 2 pretty significant pieces though - one is that improved speed for transformation feedback, so things like mirroring or dragging large complex objects is smoother.

Then the other is a major speed increase in mesh export speed, including taking advantage of multiple CPU-cores for meshing.

These improvements should already help out quite a bit for heavier files, but they are kind of more oriented towards working on one big complex object though, making a huge number of copies of an object is kind of a different area.

To make a high number of duplicated objects work better requires a different function called "instances" where copies of an object just basically record a marker for where to place another duplicate of an existing base object, rather than having fully duplicate objects. I'm not sure exactly when I'll get a chance to work on this area, it may be a while before this one happens. Until then a tool that has support for this kind of function will definitely be a good companion to use for this particular kind of purpose.

- Michael