Hi Rakesh,

As you know, too many plugins will considerably slow down your page loading time. Our theme offers a built-in setup wizard if you wish to import one of our demos but you can skip it and start your website without installing any plugin or importing any demo content as only two plugins (Grimlock and Kirki) are actually required to make our theme perfectly work.

We suggest you to use the P3 Profiler plugin to help you identify which plugins were possible causing performance issues.

For better performance and improve security, we obviously recommend PHP 7.4+. Nevertheless, if this is not possible for you (server type, incompatibilities with plugins, etc.), we recommend at least version 5.6.X. Please check the WordPress prerequisites here:
https://wordpress.org/about/requirements/

We use WP Engine to host all our demos. The performance of your website can also be improved, like our demos, by some additional plugins:

• WP Rocket: Improving the speed of your WordPress site
• Imagify: Shrinking your images with lowest quality loss
• Imsanity: Automatically resizing huge image uploads

You can always add more stuff to improve your page loading time but this is a pretty good start.

If you want to know more about performance optimisation, this article from WPBeginner might catch your attention:
The Ultimate Guide to Boost WordPress Speed & Performance

We hope this will help! 🙂

Kind regards,