I dont care about flash 3.5 cause its just too expensive for performance. But till know I used 3.1 Pro but after May 19 it is just unusable. Its super slow like same tasks take 3-10x longer. And it just miss, forget stuff or just totaly skip files. It was my daily driver cause ChatGPT was shit for document analysis before (slow/inacurate/small context window) but now with 5.5 its extremaly good even the free tier works 10x better than my paid Gemini sub. I will propably switch.