Quote - I've rendered animation with IDL set to 1 thread and my usual 8...and no matter what adjustments you make, the shadows will jitter.  My advice is to turn off IDL entirely and just make yourself a set of lights that have shadows set low and some off completely and do your best to simulate the IDL effects.  Otherwise it's jitter city.

Thanks for the info/confirmation, JAG.  Yeah, or just try to avoid rendering in Poser (animation anyway) unless aboslutely necessary.  Or definitely not anything with IDL and animation.  I managed to get it around it rendering in Vue.  I just did a separate pass for the areas where flickering was caused with the IDL lights off.