Sound Dropping?

[Gurlok]

Sometimes when I'm Playing Project Diva 2nd, certain songs have the BGM drop right in the middle.
I've downloaded the last Build and downloaded the sound plug-in, is there anything else I could do?

Also, if this isn't the right section, please move it.
Please and thank you

I'm not sure if this is the same game, since the label has "extend" after the name, but there is a thread here, some poster have the same issue as yours, your best bet is to ask in that topic.