By default all SASHA joints and morphs are set to "linear".
Unfortunately I don't have much experience with animations, so professional animators might not like this basic configuration.
They can change this with a simple click if they like. (see further down)
However, when creating a story with several "still" frames in the same room/environment, I tend to use different frames from the same basic scene setup instead of saving each new frame separately.
But with Poser's basic setup of "splined" key-frames this hitherto always resulted in chaos:
Frame #1 and #2 looked fine, but when I added a third frame, the finished second frame went "gazoom" because Poser interpolated the second frame from frames #1 and #3.
I lost several carefully posed frames by this until I found out what caused it.
So I did set *ALL* of SASHA's dials and joints from "spline" to "linear" by default. This prevents Poser from "interpolating" between frames. Each frame just remains exactly like you set it up.
If you're an animator used to "spline" animations and "spline breaks", you can change the preset with a single Library click:
Go to "SASHA Library / Pose / SASHA-16 / Karina's Tool Box / Switches / 315 Animation Behaviour" and set to either "spline" or "linear", just as you wish.
This function works from the current frame to the next key frame; so if you want to change it globally, do so before you use the figure (i.e. right after the initial configuration), and then save the figure as a preset to the library.