Sorry you are so frustrated.
If you are still here:
1. What OS and is it patch current?
2. What audio interface are you using?
3. For your audio interface, what Sample Rate and ASIO Buffer Size are specified
4. For your audio interface, what driver version are you using?
5. In Sonar, what driver mode is specified in Preferences?
6. In Sonar, what Sample Rate is specified?
7. In Sonar, what is the Total Round trip Latency showing as?
These issues sound like things that can be resolved with examination and adjustment to various settings, and possibly driver version and operating system maintenance.
Folks here in the forum can help you work through getting things set correctly, so before you truly go - why not give us a shot at helping you to get things working.
Bob Bone