I'm not the OP but even the demos with the actual software are kinda stuttery. Like the one where you move the outlined spotify window, it's just not great. It's cool that you were able to make it simple to do, and not worry about it, and it's really impressive work, but I guess still feels off a little.
Ah, I know the one you’re referring to—-that purple window actually isn’t using this library.
We can get the position of our _own_ windows easily, but when it comes to getting Spotify’s position, we need to do some more complex polling, which is slower (and only works when the 3rd-party window is in focus).