It seems like you're experiencing performance issues with your website, particularly a delay when loading for the first time and high Time To First Byte (TTFB) values when using lsapi handler. Here are some steps you can take to troubleshoot and potentially resolve this issue:

1. Optimize Server Configuration:

   • Ensure your server is properly configured with enough resources (CPU, RAM, etc.) to handle the traffic and load.
   • Make sure you're using an efficient web server like Apache or Nginx and that it's properly configured.

2. Review lsapi Configuration:

   • Double-check the lsapi configuration settings. Sometimes, misconfigurations can lead to performance issues.

3. Check for Resource Constraints:

   • Monitor the server's resource usage during peak times. If the server is hitting resource limits, it can lead to delays.

4. Caching:

   • Implement server-side caching mechanisms like Opcode, Object, or Page caching to reduce the load on your server.

5. Optimize Database Queries:

   • If your website relies on a database, ensure that your queries are optimized. Use indexes where appropriate and avoid complex queries when possible.

6. Content Delivery Network (CDN):

   • Consider using a CDN to distribute content geographically, reducing server load and improving load times.

7. Compression:

   • Enable compression (Gzip, Brotli, etc.) for your website content. This reduces the amount of data sent from the server to the browser.

8. Minimize HTTP Requests:

   • Reduce the number of HTTP requests by combining CSS and JavaScript files, and minimizing the use of external resources.

9. Optimize Images and Media:

   • Use appropriately sized and compressed images. Consider using responsive images or lazy loading for media-heavy pages.

10. Monitor Logs:

    • Check server logs for any error messages or warnings that might indicate underlying issues.

11. Consider a Different Handler:

    • If lsapi continues to cause issues, consider switching to a different handler or using a different technology stack altogether.

12. Content Management System (CMS) Optimization:

    • If you're using a CMS like WordPress, ensure it's properly configured and all plugins/themes are up-to-date.

13. Security Measures:

    • Ensure that any security measures in place (firewalls, WAFs, etc.) are not causing unnecessary delays.

14. Load Testing:

    • Conduct load testing to simulate high traffic scenarios and identify any bottlenecks in your infrastructure.

15. Consult with Hosting Provider:

    • If you're using a hosting service, get in touch with your provider's support team. They may be able to offer specific recommendations based on their infrastructure.

Remember to make changes one at a time and monitor the impact of each change to isolate the most effective solutions. Additionally, always have a backup and perform changes in a controlled environment to avoid any unexpected issues.