Not sure how long it took to get verified. I did it with my Twitter, a few months ago when I first signed up. Being verified is much better because people can listen to my songs for free! I'm gonna guess that when this site turns into the next Spotify/Soundcloud getting verified will become much harder, so do it now!
Not sure if slowness issues are lack of mining power or just an issue that is being worked on. Ask the devs! I run a Dogecoin full node, but maybe I will start running a $MUSIC node if it helps to speed up the site. Dogecoin was a good joke (also I love the low transaction fees), but $MUSIC has the potential to transform a whole industry.