I've used Sonar 3, and now v5, with Kontakt and never had a timing issue as you described at all. But I have fallen out of sync if I don't pay sufficient attention to my midi tempo maps in Sonar.
I'm not tech smart, but I'd guess it's pilot error relating to how you're dealing with your midi tracks. And I doubt it's a driver issue. Latency only comes into play when you need real-time performance. Once you've got your audio/midi laid out, it shouldn't make any difference.
But if recording live, to my ears you need a latency of > 10 ms, or better if your computer can handle it.
I have no doubts it's something I'm doing wrong. Some setting or ...I don't know... something! lol
I'm just at a loss to what it might be. Some times it records just fine and other times the audio doesn't record in sync... or rather it doesn't play back in sync! I guess I really can't tell which one it is.
I'm still playing around with it. Any ideas are welcome.
Are you recording other audio with no problem, i.e. do you know this is strictly Kontakt related? I used to have the same problem in Sonar 3 with audio not syncing to MIDI at all and it was entirely because my system couldn't keep up. I'm not sure if the Audigy really has the specs for Sonar (it might). But a somewhat faster machine (a 2.2Ghz, actually) and a Audiophile 24/96 have solved all my sync issues.
Yeah, I think quite possibly the Audigy just can't process audio fast enough to keep up with the MIDI side for some reason- that was my problem. Just nosing around some reviews it sounds like it ought to be up to the task though. Are you runing it with an ASIO driver or are you running audio out of Sonar through Window's Sound Mapper?? 'Cause that ain't no good. No doubt your PC isn't the problem