Need some help with slow figure adjustments

Hey all!

So I have run into an issue that I can't quite wrapping my mind around for some reason or another.

Its seems like most G8F figures move/run smoothly. By this I mean- when you move or bend their arms/legs, they move to that position, and it gets placed like that. You move on quickly and efficiently to the next required movement or addition to that figure.

However, I am finding with certain figures like Tonya G8F, and Niah G8F, that they are very slow to respond and finalize a movement/bend/addition. If I bend an arm, it starts to bend right away, but after I let go of leftclick in the desired position on a slider, its as if daz is having an issue finalizing that movement, and the program starts to lag. The slowdown is noticeable for about 5-10 seconds, and then it goes back to normal. The moment I make another adjustment of any sort to that character, I am then again plagued with this slowdown. (However, this slow down only occurs when adjusting these particular characters in the scene, I can effectively adjust any other character in the same scene, other then the ones in question.)

Now with Niah G8F, I have found that Reducing her "Render SubD Level" under the parameters menu- from 2, to 1, greatly increases performance. However raising that to 2 or 3 on other figures doesn't hinder their performance at all. On Tonya G8F, reducing that same Level to 1, doesn't appear to affect anything. This leads me to believe that their is another culprit that I am unaware of.

Now, after that Long explanation, I'd like to thank you for sticking in and reading through it.

Does anyone know why this performance slow down occurs with these figures??