Can you tell me, why my Quickbooks working very slow ?

QuickBooks Online's performance depends on browser efficiency, computer processing power, available memory (RAM), and internet speed. A shortfall in any of these can cause slow load times or lag.

To help improve performance, use the latest version of Google Chrome for the best experience, and make sure your Operating System (OS) is up to date and meets QuickBooks Online's system requirements.

Refer to this article for more details on improving your QuickBooks experience: Why is my QuickBooks Online slow?.

Let us know if you have other concerns.