Attempted to calibrate using their on screen tests. This involves for Audio hearing drum taps and hitting strum on the guitar. This ended up with a value of 156 ms.
The video is watching a needle go from left to right and strumming when they hit their extremes. This ended up with 191 ms.
I attempted to play an apprentice song, using the bass on easy, but managed to fail as I could not get the strumming correct. I just couldn't get it to match up.
These numbers seem ridiculous. But this is what the game is giving me. After those, the numbers 75 and 60 don't seem too bad.