I can help you sort this out, @Fred64.
Let's start by making sure that your point-of-sale software is updated to the latest version. Doing this will make sure that you're able to download critical product updates that can help run your QuickBooks smoothly. I can guide you on how to do it.
1. Go to the Help menu.
2. Hover over Software Update.
3. Select Updater Preference.
4. Choose the General tab.
5. Click Automatically download updates.
• You can also select Notify me so you can decide if you want new updates when they're available.
6. When you're done, select OK.
Once completed, close QuickBooks to ensure that all components are updated. You can read through this article for more detailed instructions: Update QuickBooks Point of Sale.
Also, the other possible reason why QuickBooks Point of Sale running slowly is that the Windows admin permission was not given to POS software. You'd want to run the QBPOSAdminUtility on your computer where it is installed to fix the issue. Here's how:
1. Download the utility to a location on your computer.
• Make sure to do this for each server and client workstation that has Point of Sale installed and will process credit cards.
2. Right-click on the QBPOSAdminUtility.exe.
3. Select option Run as administrator.
4. Once the utility runs and is successful, click the OK button to complete the process.
I've added these articles to help you resolved any unexpected behavior when working with QuickBooks POS:
• Resolve Point of Sale errors in Windows 10
• Resolve unexpected errors when opening POS
Leave a comment below if you have other questions about using QuickBooks Point-of-Sale. I'm always here to help.