This time we’re going bigger than ever. Fabric, Power BI, SQL, AI and more. We're covering it all. You won't want to miss it.
Learn moreLevel up your Power BI skills this month - build one visual each week and tell better stories with data! Get started
I am attempting to aggregate a merged query but the preview has been "loading" for 10 minutes now (expanding the table only takes 15 seconds) When I try to apply without seeing the preview, it gets stuck after loading about 1/3 of the rows. Is there something I am doing wrong?
Hi @mwhalen ,
You may try to disable "background refresh".
If you don't want to refresh or load for specific reports in power bi desktop, you can disable the following options.
Also you can try Table.Buffer to performance.
About more details, please kindly refer to
Speed/Performance aspects – The BIccountant
Best Regards,
Stephen Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Check out the April 2026 Power BI update to learn about new features.
Sign up to receive a private message when registration opens and key events begin.
If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.