After dimension dense setting and creation of business rules, planning screen takes too long to open

Summary:

After adding business rules screen does not open even after waiting 10 minutes

Content (required):

Below are the recent changes performed in the system

1.Changed 6 dimensions to dense. (Is it a problem? Should it be reverted back)

2.Created business rules to perform data copy between versions and Stage dimentions (which indicates business process stages).

3. some of the rules were created for exchange rate calculations.

4. Data Maps were created to exchange data between planning and EPCM BSO cubes.

After all these recent changes, not sure which change made system slow. Heaviest screen takes more than 10 mins to open and users cannot use the system.