I’ve got a scene with low polys - lots of instances and all arranged by layers. I turn off everything and the viewport is still fast. But, copying/instancing new object is really slow. It only happened after instancing “too much.”
Anyone have any ideas what is happening and how to resolve this?
WELCOME TO 3DS MAX…
Xrefs didnt work. I found a temporarily solution. ‘Save selected’ offending instances, then delete in main scene. Right before render, merge the offending instances - all is good again.
What a piece of crap.
Yeah what he said 
Guess what, i must have used “You gotta love Max” talking to juju about it on msn.
This may be silly, but a solution for static instances would be to position them as individual instances, then collapse and join a number of them into one object (say trees).
Then try and make the most of the newly formed object, either as non-instanced mesh or as VRayProxy.
I had over 2k instances at one time in max, and it wasn’t that slow, anyways.
Not a rocket either, but hey 
Lele
what he said…