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#41
The problem is defiantly either related to CPU spiking, which is largely related to the front side bus speed, CPU speed, and your amount of cashe. Another issue is the clocking on your sound card, and how much available RAM you have when running your audio programs. It could be all of these, or one of these. Many times I find that multiple factors contribute to degradation of audio performance.
Lastly, spyware and virus programs such as mcafee, and norton put a huge strain on your system resources, especially if you have real time protection on. Do some process of elimination and see. Post results for us.