Hiya TG!  I know, LTNS! :)

How did I do it? I...um, cheated.

What I needed was a series of images (not a 'movie') to create a sprite. 10-12 images. Poser can't do that few images and have the effect look acceptable. So I simply rendered out 30 images from Poser, deleted every third image and stitched the remaining together and created my sprite. 

Voilà, Laura is now walking. Not the ideal solution but it works!

i7 6800 (6 core/12 thread), 24 GB RAM, 1 gtx 1080 ti (8GB Vram) + 1 Titan X (12GB Vram), PP11, Octane/Poser plugin, and a partridge in a pear tree.

Oh, and a wiener dog!