Lagging problems or not?

[Razixi]

Hello, I just joined because I basically beat the crap out of the beta versions and I wanted to try new songs.. the problem is, although I'm hitting the arrows head on and am not messing up in any way, it counts it as "missed". What could the problem be?

[Afrobean]

You've got to have the flash window active. Click on the game just before a song starts to be sure that it's active.