I agree with the Scroll bar, that's something I noticed right off the bat. not that I couldn't see it, but because I missed it with my clicker 50% of the time. Sometimes it can disapear, as you mentioned. What I had done to be able to see better is expand the side panel out a little and it showed up much better, (but still small).

I also tried the render after rebooting at 84 to the remaining 105 frames. What I had discovered is it then started the first frame at 5:45 seconds as the animation began from that frame on. I timed a few frames later and they remaind the same rated.

I think what is happening is, It must be adding each accumulated past Keyframe that had been rendered, to each new keyframe in the process of being rendered. thus slowing the animation render process incramentally down. I was able to finish that animation clip. But now I have a clip of a 122 frames. there goes about 9 hours I bet.

As far as sending ideas to make poser better, it is best to send them in as suggestions. If you have a bug report, (scripts?) that is probably a bug. What I am doing at this point doesn't involve scripts. so I would report it to SM.