The framerate issues probably have to do with studios outsourcing work to the Philippines, China or South Korea. When you have animators spread out over multiple countries speaking different langauges choppinness and general ugliness is the result. It's a double edged sword really. The Philippine animators get to build expereience, but being used as cheap labor keeps them from producing their own high grade product. Anime also has to have a high turn over rate and they pump that shit out and whoever has to make it, Japanese or not, end up overworked and then their work sucks because they can't stop their hands from shaking.