After seeing the animations and reading the article, I am somewhat skeptical about the stability of these orbits. They are rather long and have plenty of near-m

After seeing the animations and reading the article, I am somewhat skeptical about the stability of these orbits. They are rather long and have plenty of near-misses. Even if they are stable in the sense of a pure 3 body problem, at close distances stars don't behave as point objects anymore. Instead, you have things like tidal forces and matter around stars. Additionally, all the near misses makes it difficult to calculate the orbits, even with variable step size.