I have a wooden structure connected together using cone twist constraints, but at the very beginning of my animation, all the constraints seem to sag, or drop down as they sit into place.

https://i.imgur.com/s0TZC3f.gifv [i.imgur.com]

I'm unsure of how to have everything lock into place tightly.

I have tried setting the Max Up Rotation, Max Out Rotation, Max Twist and Softness of the constraint all to zero, but this doesn't seem to stop everything sagging.

Attached is a simplified HIP file showing my problem.

Increasing the number of constraint solver iterations will usually help if constraints seem softer than they should be

It looks like the number of constraint iterations needs to be super high to stop any wobble at all.

Somewhere around 100+ still has a slight visible wobble going on. 1000+ is getting better, which understandably slows down the sim a lot.

I have remedied the situation by adding a second lot of glue constraints to the overall object which holds it together until it needs to break.

Thanks for the tip!