I can share some insights into why you're experiencing some loading pages with invoices and estimates in QuickBooks Online (QBO), Keep.
Since you're experiencing speed issues with QBO, there are factors to consider to enhance user experience:
A lack of any of the mentioned areas can lower performance. In the meantime, let's verify if your system meets the basic requirements to narrow down the cause of slow performance: System requirements for QBO.
Additionally, please refer to this article for the step-by-step process to improve performance when using QBO: Performance Overview for QBO.
If your computer or device meets the system requirements for QBO products but is still experiencing loading issues, I'd suggest performing browser troubleshooting steps.
Moreover, you can use this article as a reference to gain valuable insights on your purchases and sales as well as the status of your stock: Use reports to see your sales and stock status in QBO.
We're always here to help if you need anything else with load pages in QBO. Have a great day.
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