--- You'll have to break this down. Write a tester to thoroughly wring out a small piece. Choose a section with one piece of hardware, or one of your DLLs. Call it a thousand times. Check the timing of each call (how long does it take?). Check the memory usage each time (how much?). When you're satisfied that the section under test is working OK, then choose another section, and give it the same treatment. This should point up the problem child.
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