Along_the_Wire
What was the crack?
I’ve heard the RX / RX2 and XZ can be a bit iffy if using usb sticks formatted in anything other than MS DOS (FAT 32)
There have been significant issues with 2012-2015 MacBooks when they have dual graphics and turbo boost.
Remedies include l:
installing Turbo Boost switcher and gfxcardswitcher (turning turbo to off, and graphics to “Integrated only”
Close browsers especially Chrome, stabilising the graphics usage.
Rekordbox preferences - View - waveform drawing rate = set to MEDIUM
Restart and PRAM reset before every performance.
I used to get jitters and pops on the DDJ-1000 and the XZ when in rekordbox performance mode if I didn’t do all this.