Thanks for the update @Segundobroggi. In this case, I would try the following. I’m guessing since you are using Mixlr and Audacity you are creating an Aggregate Audio Device in macOS. While aggregating audio devices usually works fine, some combinations of audio devices can be unreliable e.g. if they don’t support the same sample rates or if their clocks cannot be brought in sync.
That being said you can try adjusting the settings in the “Audio MIDI Setup” system app to see if that helps:
- While djay is running and configured with an aggregate device, select the “Aggregate-Audio-Device” device in the “Audio Devices” window of Audio MIDI Setup.
- Try disabling “Drift Correction” for one or both devices that are being aggregated.
- Try adjusting the sample rate of the aggregate device.
- Try changing the “clock source” of the aggregate device.
If that doesn’t solve your issue, then I recommend you disable Mixlr/Audacity and retest without using an aggregate audio device setup.
I hope that helps!