It was slow for me too. I would click and wait for something to happen. Just when I decided that my click hadn't done anything, the blue arrow with the pencil

It was slow for me too. I would click and wait for something to happen. Just when I decided that my click hadn't done anything, the blue arrow with the pencils appeared, but I was already clicking the mouse so I had to wait again. This made it difficult to get the hang of and it was very frustrating. Anything you can do to speed it up will be a great improvement.