Layout Shift Issue

Hi,
The plugin is causing a layout shift when the page is loaded. One of the images from the thumbnail list is displayed in a flash and then loads the main product image. The issue is much more evident in slower networks.

I’m using wp rocket and excluded the plugin files, also tried disabling the plugin. But that is not making any effect.
Expecting a reply soon, Thankyou.

The page I need help with: [log in to see the link]