Custom rule taking longer time not completing

Summary:

The PCM custom rule is not completing. I also tried using NONEMPTYTUPLE

I want to apply multiple project % drivers with the PR000000 project value.

Any idea hint for this issue,

Custom rule code as below

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

[Allocation In] :=
(
[Balance].[Net Balance].[Input],
[Rule].[Calculation Rules].[NoRule],
[Projects].[Total Projects].[All Projects].[PR000000]
)
*
(
[Balance].[Net Balance].[Input],
[Account].[Stat Accounts].[Regular-Alloc],
[Rule].[Calculation Rules].[NoRule],
[Future2].[No Future2],
[Site].[Total Site].[No Site],