Comment 15 for bug 1749800

@Daniel:
By trying to scratch waveforms by mouse it doesn't crash. Just the expected behavior.
The memory consumed by Mixxx is about 630 MB to 750 MB just before the crash.

@jus:
My sound configuration at Mixxx startup is:
CoreAudio 44100Hz @9.00227ms (Audio buffer setting 2.9ms)
Only Master = Build-In output Channel 1-2

Then before playing any song, I go to the settings after Mixxx startup and change the sound configuration to:
CoreAudio 44100Hz @4.96559ms (Audio buffer setting 2.9ms)
Master = DJConsole Rmx2 Channel 1-2
Headphones = DJConsole Rmx2 Channel 3-4

This configuration is equal to my other DJ/Midi Controllers (Hercules DJ Console 4-MX, Pioneer DDJ-SX).

Then I load a song to Deck 1, press play and try to touch and move the jog wheel. As soon as I move the jog wheel Mixxx crashes.

I have just one controller connected at a time.
The crash happens with the stock controller scripts and my customized scripts.

If I launch Mixxx from the terminal using "/Applications/Mixxx.app/Contents/MacOS/Mixxx --developer --controllerDebug" I was not able to reproduce the crash anymore. In this case the scratching works at the first time touching and moving the jog wheel (as expected). In the past I had the crash using the terminal, too.