Low resolution for pictures in collection

Hey everyone, we’re facing an issue where our product images appear lower quality on our collection pages compared to when viewed directly on the product page. We’ve ensured that our image uploads are of high quality, as they appear sharp on product pages. Any insights or solutions on why the image quality might be compromised specifically on the collection pages? Perhaps there are other settings in the theme affecting this. Appreciate any help or suggestions!

https://acapella.co/en/collections/basic-tees