FRX Financial Reporting Performance Issue

Hello - we use FRX to do the financial reporting in our Dynamics AX system, and are wondering if anyone out there uses this and has had performance issues with it slowing down the system dramatically while specifically rebuilding the GL’s? We recently upgraded our SQL server, and while we were able to reduce the timing it took to complete, it did not reduce the performance strain it imposes on the AX system and the other users. We’re wondering if anyone has experienced this same thing and were able to find a way to lessen that impact on AX while running?

Thanks