i think that the stars attacks should be a decent bit faster actually. shortening the time between the stars spreading out and them flying towards you could shorten each stars lifespan, fixing the main problem they have where multiple attacks in a row have the stars clump together into near-impossible patterns and/or overwhelm you.
also i know HOW to deal with them, its just that they're so inconsistent bc of the problems above that they tend to feel like "fuck you difficulty" if that term makes any sense.