Hi Ron

Personally I treat Debugging and Timing as two completely independent processes, Debugging interferes with timing especially if you are using ICD as with MCSP even if you enable/disable sections.
Debug
Did you mean you do or do not use the ICD feature in MCSP

Timing
For me I choose a pin that is not being used for the routine i am interested in timing and toggle it, then capture the output on a scope or analyser, maybe also there is something that could be hooked up to a sound card. This for me is the only way I have found to accurately "see" timing.

Duncan