At the moment, there is an issue on loading of pool data in CM25. It seems extremely slow at the time more than one user is trying to load the planning table. As per the SAP advice (SAP Note 148632) ZKBEDREP was run to remove the inconsistencies of data. Unfortunately it also didn't help in our case and no improvement at all.
If somebody is aware of this issue and faced the same situation, kindly shed some light to resolve this issue. For example, below are the feedback from user.
It take averages 12mins to go in to the pool data,
It take averages 1min to dispatch a job
It take averages 2mins to save the pool data.