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1.3: Mouse cursor stutters when Soundflower 16ch is active

Lane Robinson reports that in Soundflower 1.3.0, the mouse cursor stutters and CPU usage is through the roof when the Soundflower 16ch device is active.

Lane writes:
There is also an intermittent strange behaviour with the mouse movement when I have soundflower 16ch selected in the sound prefs input. It leaps around instead of smoothly scrolling. Switching back to Line In resolves the mouse movement. I believe it's related to cpu load, as cpu load shoots up when I have those selected. I believe the mouse tracking only sometimes because erratic because I don't always maximize the cpu load. In any event, whether your mouse becomes erratic, you should be able to see the differences in cpu load when you have different input devices selected in the sound prefs. I have not observed this effect with sound output for soundflower.

Machine Name: iMac G5
Machine Model: PowerMac12,1
Boot ROM Version: 5.2.6f1
System Version: Mac OS X 10,4,11 (8S165)

In case it might be relevant, I also have a griffin iMic on this system.
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