SoundFlower crackles

There’s an old thread about this but it seems like nobody from C’74 ever responded to it.

When I use SoundFlower on my 2010 6-core Mac Pro (10.6 or 10.7) after about 2-3 minutes I start to get crackles. It starts with the odd crackle and begins to build up.

I never had this problem with my old Core 2 Duo MacBook Pro over several years of use.

Anyone have any answers to why the crackling is happening or, better still, how to stop it from happening?

Many thanks.

Matt