I've been working on a design using a "master model" technique (all the parts designed in one part file) for a relatively small assembly (only about 8 parts). It does have a couple dense/high instance count fill patterns, but no in context references. For some strange reason, every time I add a new feature SolidWorks insists on rebuilding everything, everytime. Here's how my work flow is currently going...
[Scene: A sunny spring afternoon in southwest Virginia. I'm working on a part file in SolidWorks with zero in-context references.]
Me: Alright, SolidWorks, you've been working hard so I'm just going to add a simple cylindrical boss to a flat surface. You can handle that, right? [Sketch, Circle, Fully Define, Blind Extrude]
SolidWorks: No problem! But let me rebuild everything when you're done. [SolidWorks Rebuilds after accepting Extrusion settings]
Me: Uh, everything else was already fine, but sure. Whatever you've got to do.
[A few moments pass while I reflect on the cylinder proportions and such.]
Me: You know what, let's edit that feature. I think I want to modify the end condition. [Right Click, Edit Feature]
SolidWorks: Sure... Hold on just a few moments while I rebuild everything for you. [SolidWorks Rebuilds]
Me: *Confused* What? Why? I haven't even changed anything yet.
Me: Alright, whatever. Hmm... You know what, I think I'm going to approach this cylinder a different way. [Exit out of Feature Properties without making any changes. Zero changes. Don't even rotate the model.]
SolidWorks: Hold on just a second, I'm going to rebuild the model for you.
Me: Why the crap are you rebuilding again? I didn't change anything. Literally, nothing since your last two rebuilds.
SolidWorks: I like rebuilding. It's my thing. Also, I'm an epic troll.
Anyone know what the heck is going on? FYI - I do not have rebuild verification turned on, and I'm running 2014 SP2.0.