Hi sir,
I am testing Web Page Speed at "Google PageSpeed Insights" it is saying "Reduce server response time". As per 'Suggestions Summary' given below of the page i fixed all Errors. As you can see my webiste passed 7 rules but "Reduce server response time" [Error] still coming. Can someone suggest me please how to fix it!
My website is hosted on godaddy Server, i have window plesk accont and i am using Asp.net Technology.
Below is screenshot:

Reduce server response time
In our test, your server responded in 5.3 seconds. There are many factors that can slow down your server response time.
Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
Consider Fixing:
Leverage browser caching
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
7 Passed Rules