drawRect should be one of the fastest graphics operations, I think it may even be currently hardware accelerated. I’d make sure it’s the right size you want and you are perhaps not doing anything else problematic performance wise.
Hi! As I know, working on Stage3D Graphics rendering is not easy at all, In my project I have to use graphics API, so now, just wait for the new updates!
If I had good skills at high-level programming, I would dig into it