Here's a job for you. See if you can slice this with simplify3d.
Just crashes on me everytime.
https://www.thingiverse.com/thing:1385312

It's the ideal model for the delta.
Reckon I could knock one out in about 8 hours.
Plus i have lots of the right sized ball bearings :-)
Only thing I've ever come across that crashes s3d though.