Hi - I will do some searching/testing, and see if I can help - would you please look at the info at the bottom of some of the forum member's posts? You will see many of us put a bit of a summary of our system specs into the Forum Profile's Signature area, and then make sure we click the 'Always attach signature to posts' check box.
I am wondering what sort of audio interface you are using, or are you using either your computer's on-board sound chip or perhaps ASIO4ALL?
Can you please list the Sonar Preferences audio interface Driver Mode you are using? It it ASIO? WDM?
Thanks,
I'll check back in a bit - and as I indicated above, I will also dig through some other earlier threads to see if something concrete comes to mind.
Bob Bone