Additional information re sluggish response:

There is a problem when selecting body parts - with, say, V4 in the scene and body selected, then selecting 'head' from the body parts list, there is a distinct delay before the word 'head' appears above its parameter list; it used to be almost instantaneous.

Going from 'body' to 'head' for example, this morning, took 3 seconds; from 'head' to 'right collar' needed 7 seconds; adding a jacket and repeating these choices increased some times, the longest delay being 11 seconds. Adding M4, clothed, to the scene also produced delays of over 10 seconds between choosing a body part and the name of that body part appearing above the parameter dials.

This needs to be fixed.