Why aren't product images loading after applying filters on Turbo theme?

Hi there,

I’m using Turbo theme on my store. On the collection page, when I apply the sorting filter, the images of the products don’t load up.
Here’s the link to one of the collections: https://serenityoptical.com/collections/timex

Here’s indicated the filter,

After applying the filter, it stays like this for 10-15 minutes.

Please guide how to resolve this issue. Thanks.