StarTools will not work correctly (or work poorly) with an incorrectly stacked dataset. Getting a suitable dataset from your free or paid stacking solution, is extremely important.
Thanks for all your hard work and a fantastic product that I can't recommend strongly enough!
The motion is configurable both by you and the viewer in both X and Y axes.
Edges > Threshold; selects all pixels that are likely to belong to the edge of a feature.
Understanding how AutoDev works is key to getting superior results with StarTools.
Even the way StarTools displays and scales images, has been created specifically for astrophotography.
You can convert everything you see to a format you find convenient. Give it a try!