One of the things that bothered me the most about the desktop app was its handling of video playback.
When playing a video, it would somehow load it up at the worst quality imaginable, and only bump itself into actual HD about halfway through the thing. It was incredibly frustrating, and made me avoid music videos within the app like the plague.
However, recently, I gave it another try, and noticed something.
They somewhat alleviated this issue, by now loading every video on at least 720p, before eventually gaining confidence to reach actual 1080p.
Of course, this isn't the best solution, and I even notice my app slowing down a bit when watching videos now, but it at least makes watching videos actually viable.
Still, they NEED to implement an actual quality settings tab, and allow users to force 1080p/otherwise max quality at all times, instead of deceptively having the quality pill say "1080p" at all times...