X3 Financial Report Designer performance

I have a SI report using the X3 Financial Report Designer that is taking 25 mins to refresh.

 I have recorded a profile, and the step that is taking longest is the "Data Ranges Named" which is taking 17 minutes alone.  The hidden rows are only a few seconds or zero.

Looking at the hidden sheets, the ACF data is under 3000 rows, whereas the ACA data has 190,000 rows. The data load is loading the current & previous years data which is required for the report.

Any suggestions on how to resolve this bottleneck?

Thanks.