The slow performance of QuickBooks is quite unusual, nadarajah-selvak. I understand how this can impact your work. We appreciate you bringing this issue to our attention and sharing the steps you've performed to resolve this. 

Not to worry, I'll share a few troubleshooting steps to make everything run smoothly.

QuickBooks Online operates as a web-based service, utilizing the processing power of your computer or device, available memory (RAM), and the speed of your Internet connection to function properly.

I recommend checking that your system meets the basic requirements to help narrow down the reason for slow performance. A shortfall in any area can reduce performance. I've listed the recommended operating systems and internet speeds below.

• Windows PC: Windows 10, Intel Core i5, or comparable processor (2015 or newer) with at least 4 GB of RAM. 
• Mac: OS X "Big Sur" 11.1 or newer
• Internet connection: 3 Mbps or higher

Once verified, make sure you're using the supported web browsers:

•  Google Chrome: Version 78 or newer
• Mozilla Firefox: Version 76 or newer. 
• Microsoft Edge: version 75 or newer
• Safari: version 12 or newer (Mac only)

If you're using the recommended system and browser but still experiencing issues, I recommend contacting our QuickBooks Support Team. They have tools to investigate the cause of this and ensure this gets fixed. Here's how:

1. Go to the Help (?) icon at the top.
2. On the Assistant tab, click Talk to a human.
3. Enter "QuickBooks is slow" in the Type something field, then click the Send icon.
4. Click on I still need a human.
5. Select Get help from a human.
6. You can either select Chat with us or Have us call you.
   

I'm available to help with any specific inquiries you may have about creating and managing transactions in QuickBooks. Don't hesitate to reach out if you require further assistance.