Image with text - Poor image quality on both devices

[Kacper04]

Hi! I'm using Dawn 14.0.0 theme and i have problem with images quality in "image-with-text" blocks. I tried increasing and decreasing the resolution of the photos, optimizing them and much more, but without any effect. I have a similar problem with my product thumbnails (On the product page the photos are in good quality) Please help. URL: https://geoplakaty.pl

[Kacper04]

Thanks for your reply! How can I check if my images in text-with-image block are set to display in their original size?