Higher Response time when loading APO product and Location in APO planning Book

Hi Experts,

We have high response time when loading APO product location in APO Planning book(/SAPAPO/SDP94) for business user and not for the support team.

We have recently moved some custom BADI macro which is assigned as Default macro. The same set up is there in Quality system (but response time is good in our quality system).

Can you please suggest us what could be the issue here?