Delay when Processing Mechanical VBAs

We have noticed that when placing ducts (round, oval or rectangular) we were receiving a significant delay while the tool processed the elbow VBA...roughly 10 secoonds.  After comparing our dataset to the delivered Dataset_US, we noticed one catalyst was our large number of levels (which were prompting the warning about large level libraries).  Since we created an "AECOsim-specific" DGNLIB with just levels for architectural, structural, mechanical and electrical (thus removing civil, landscape, survey, piping, instrumentations, etc.).  The level number warning does not appear anymore and now we are seeing roughly a 4-second process time when the elbow routine is running, and this is common between the CH2M HILL datasets (for metric and imperial) and the delivered Dataset_US.

Question is...is this to be expected?  We have users comparing AECOsim back to Bentley Building V8i SS1 and showing the process time was much quicker in that version.  We have run all the VBA fixes as initially I was attributing the slowness to that, but users noticed that the structural tools that utilize a VBA routine are much quicker when compared to the mechanical tools.  Also, the 4-second delay didn't seem to be there back when AECOsim was released earlier this year so we are wondering if with all the Microsoft security issues could something else have been corrupted?  Note we have been testing from both within ProjectWise SS4 and by launching from the desktop.

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