The latest update has some scoring changes.
The global multiplier has been increased from 1.5 to 2.0 so everyone will get higher scores. This means previous unreachable high scores can now be beaten.
Playing with no perk weapons will also give you a 5% score bonus.
There is a fix the make sure each play of a track produces the same outcome.
I've also fixed an issue with Open Mic track ID mixing up some of the data.