Quickbook too slow have clear cache but still loading slow....

This what we have when wanna access to inventory and billing report @ supplier report.

here is the video of the issue:
https://forexengineer.com.my/download/Screen%20Recording%202022-01-09%20at%2012.15.31%20PM.mov

Thanks for visiting the Community today, @saiful1. I appreciate you for doing the initial troubleshooting which is clearing your cache. 

After doing those steps, kindly check for the following scenarios below:

• Your company name has special characters that are not allowed.
• If you have a character in the company name that is not allowed, QuickBooks Online will start giving you some problems with page loading and errors.
• See What characters are acceptable in company names in QuickBooks Online? for a list of characters that are acceptable in your company name.
• There are two or more adjacent dollar signs ($$, $$$, etc.) in any list or transaction data that would appear on the page that's not fully loading. 
• If you enter "College $$" for instance in the check window’s memo field, the register page will not load completely.
• You are trying to access QuickBooks Online with more than one browser tab simultaneously.
• You may see blank pages if you signed in to the application separately in the additional tabs. Here's the correct way to work in more than one tab:

1. 1. While signed in to QuickBooks Online in one tab, go to the browser address bar, highlight then copy the entire web address.
   2. Open a new browser tab.
   3. Paste the web address into the new tab then press Enter. The home page of your company will now load in the new tab.

Should the issue persist after performing these troubleshooting steps, I'd suggest contacting our QuickBooks Online Customer Care team. They can help check your account and help fix your issues. 

For future reference, check out this article to learn more about filing your sales tax return and recording tax payment in QuickBooks Online

Feel free to message again if you have additional concerns about anything else. Take care always. 

It's a pleasure to have you here, @saiful1.

I’ve seen that you’ve posted twice. My colleague @katherinejoyceO has already addressed your concern so you can access to inventory and billing report.

You can visit this link to view her suggestion: https://quickbooks.intuit.com/learn-support/en-us/other-questions/re-quickbook-too-slow-have-clear-c...

Additionally, you can also visit our Support page if you need more tips, resources, and video tutorials. It includes information to help you manage your company files.

Don’t hold back to add a remark below if you need further assistance about generating and managing your reports in QuickBooks. I’m here to help always. Keep safe and take care.