Yes by ear, mean manually, listen to what happend when you move the parameters and find the good setting when your hear on your that’s the DRY signal from ableton channel on your mixer (metronome, or percussive sound loop(beat, or snare) is synced to the DRY signal from traktor coming back on your return FX channel , on your mixer.
The parmaters to set is what deevey pointed out, and you must set the paramater of all channel (Iin ableton software, as the picture show) for all FX return channel used to aply to Traktor signal.
If you use also FX for ableton channel straitgh into ableton, it"s better to create dedicated fx channels, and send this FX channel to ableton master.
Example for my configuration in ableton :
I use 2 drum rack channel (808 et 909 drumrack) a djmebe/bongo drumrack, and a snare/hats drumrack:
I send these voice to master of ableton and I create 2 FX channel called Ableton reverb and Ableton delay) and the 2 FX channel are routed to ableton master (soundcard channel 1 & 2).
I create 1 audio input channel called (Traktor input) witch is routed to 2 Traktor FX Channel, and these channel going back to soundcard with usinf specific channel on the soundcard (3&4). i adjust the paramater track dealy only on these return FX chanelle.
I hope it’s enough elaborate. I join also a screen capture from my ableton set up
