sometimes my models spin to any direction before rapidly returning to the path. any ideas why?

don't know if this helps, but did you try to reduce the 'dist' parameter ? did you try add more/fewer nodes ?

Do they change their angles or do they move actually?

i added more nods. they change their pan angle (i deactivated roll and dist) and leave the path for a few seconds, walk into strange directions, spin around and then return to the path. the returning to the path is faster than the rest of the path.

yes, I tested Path_spline some time ago and I found that problem

so any solution to it?