[pmden]

>However I've read that it's still stuttering on the Meizu MX4

I can confirm this. I do feel it got better with the last update, but it is still noticeably laggy in situations where it has little reason to be. It doesn't help the primary screen, or hub, or scope (whatever it might be known as) has a tendency to refresh itself frequently, and draws its various components in a very unpolished manner.

With that said, it isn't all bad - I've been really impressed with the podcatcher "Podbird". If every Ubuntu touch application was as well done as this, I could probably start recommending it to people I know. Here's a recent video of the desktop build, which is largely identical.

https://www.youtube.com/watch?v=SLSqz7skYvw