Audio slows down cluster/Qmaster compression

I compress hours of DV25 in Compressor using the cluster method via Qmaster. When it works it is lightning fast for the video only. The audio segments cannot be broken up into pieces like video. This defeats the time savings of the faster video compression because I have to wait for the audio to be compressed at the same rate as the traditional method of sending it to the computer for processing.
Is there a work around to get the audio processed like the video in the cluster/qmaster senario?

That's the nature of some codecs. Some can be segmented, while others cannot.

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