If QuickBooks is running slowly, several factors could be at play. Here are some steps to help resolve the issue:

1. Update QuickBooks: Ensure you're using the latest version. Updates often include performance improvements and bug fixes. Go to the Help menu and select “Update QuickBooks Desktop” to check for updates.

2. Check System Requirements: Verify that your computer meets or exceeds QuickBooks’ minimum system requirements. Insufficient RAM, outdated processors, or low disk space can slow down the application.

3. Optimize Your Company File: Over time, QuickBooks files can become bloated. Use the “Verify Data” and “Rebuild Data” tools found under the File menu to check for and repair file issues. Additionally, consider condensing your company file to reduce its size.

4. Clean Up Your System: Clear temporary files, run a disk cleanup, and defragment your hard drive. Also, ensure that there are no conflicting applications running in the background.

5. Check for Network Issues: If you’re using QuickBooks in a networked environment, slow performance might be due to network problems. Test the network speed and stability, and ensure that your network hardware is functioning properly.

6. Review and Limit the Number of Open Windows: Too many open windows or tabs in QuickBooks can slow it down. Close any that you’re not actively using.

7. Reinstall QuickBooks: If all else fails, uninstalling and reinstalling QuickBooks can resolve persistent performance issues. Be sure to back up your data before proceeding.

By following these steps, you should be able to improve the performance of QuickBooks and address the slowdown issues effectively.