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You're on the right lines by reducing as much inter-app COM communication as possible. Also, release all COM objects when you have finished them.
I haven't tried using the graticule add-in, but the idea of an add-in being faster is because it runs in-thread. Hence the COM communication should be quite a bit faster.
You have dual core PCs, so it is possible (in theory!) that dual-process overhead is much reduced - so you do not see as much of a speedup?
Richard |