Official comment
There are many posts - not all get responses as many have answers just a quick Google result away (many of which are on this very forum), but for those which do merit a response, we're getting to them as we can and thank you for your patience.
You can tell your friend that XML support is something our engineers are considering but we don't have any other information. You can also tell your friend to disable the waveform preview column in the library / playlist and browsing will significantly speed up. It's also something the team is aware of and working to improve. And finally, since you're such a good friend, you can tell them that if they have an OpenGL issue with Lyric, that they should probably file an inquiry ticket here and our support team will gather some additional information to assist them in resolving that particular issue.