Hello,
We have disabled all the third-party plugin except WooCommerce and enabled the default theme Storefront and product page speed is 4.82s https://tools.pingdom.com/#!/Qes9n/https://www.mototorque.in/store/ It’s too slow for the default theme with the 1 plugin enabled. So, I would recommend you to contact your hosting provider and solve this.
We have updated theme for you to version 5.0 beta that is more optimized than 4.28.1. So, once you speed up your site with the default theme you’ll get the better results also when XStore theme is enabled.
When XStore theme and WooCommerce plugin are enabled speed is good https://tools.pingdom.com/#!/cdhunM/https://www.mototorque.in/store/
Regards