Traktor 3 Heavy On G4 1.67 ? Options

[beauty_speed]

Hi all,

I could not find a Traktor section, so here it goes:

Having installed Traktor 3 on my Powerbook g4 (1.67ghz, 1.5 Gb RAM), I noticed two things I cannot find an explanation for:

1. Using the same audio interface (us122) as with my PC, sound quality is noticeably better, the mp3´s sound much fuller and more detailed and not boomy.

2. Every operation runs very slow, namely the graphical rendering of waveforms on both decks,the analysing of the tracks, and the occasional glitches and audio interruptions. I have tried different latency settings but I am not sure of one thing regarding these settings:
- in Windows, the latency is selected through the buffer MB, 256MB, 512MB, etc. However in OS X, latency is selected by milliseconds.

Now, I know that the higher the latency the less chance there is of getting audio problems, but how can I know if 5.5 ms corresponds to 256, 512 or something in between ? Is there an "ideal" latency setting for an audio interface ? And can this explain the general "laziness" of the application or is this Powerbook simply too slow for the app ?

Thanks for any feedback.