You also probably didn't see this, but this one helps as well.

Under your sound system (both maybe, I just do both lol) change this:

[Audio.GenericAudioSubsystem]
and/or
[Galaxy.GalaxyAudioSubsystem]

Latency=40 (original?)
Latency=70 (New, non static sounds)

Would do good for Vista/7/8 afaik.