Downgrading from a 5 star rating because I have been playing for awhile and getting really good at it. But all of a sudden it has been lagging and making me miss my notes. I'm so close to hitting Diamond on some of my songs and can't even get a gold score on them now. Please fix the lag issue and I'll give a higher rating. And can you please bring back the $4.99/wk unlimited play. 50 gems for an hour is ridiculously stupid if you think people are going to shell that out.