Degradation performance for consolidate holding entity

Summary:

In my understanding, if i run consolidation rule for parent entity it should run all idescendants of that parent member.

But in my case if insert some insertion rule (FCCS_10) the performance for consolidate parent entity is less than 5 minutes (i check the calculation result it run also for the subsidiary & holding entity under that parent member hierarchy), but if run the stand alone entity with holding consolidation method it takes 25 minutes.

How to diagnose what causing this degradation performance?

Thanks

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