Depends on what stability you are talking about. For freecad, I have to redo the entire part every time I change a dimension and the program doesn’t like it. Which is my main gripe with it - parametric cad that doesn’t like its parameters changed. It was worse before the naming problem was solved, but is still a huge issue. With solidworks and the same designs, we didn’t get as much lag (though it is a huge resource hog), but changing stuff earlier was a breeze and always worked