Why is the performance score low in lighthouse audit?

You should be auditing the post URL (yourwebsite.com/post-abc-123) and not the blog URL (yourwebsite.com/blog).

If you are getting low scores even after then this could be due to a number of reasons.

1. If you are using superblog on a subdirectory (yourwebsite.com/blog), the request to the page hits your server first and then it has to be rendered by your server. These steps could add potential delays and cause the problem.

2. You might have added custom js scripts to your superblog that are unoptimised.

3. You might have added custom widgets in your blog post that are causing delays.

4. Run the audit 3 times to avoid cache issues.