try to zoom in on my and on your website on your smartphone and on your computer. This is a problem I have on different browsers and on different smartphones both on Android and iPhone
The same problem I see and you have in the demo version of retail, please see that the image whose width is higher than 1353px, and just look at your mobile version, the image is more broken.
it’s on a smartphone
P.S. On computer, too, is compressed, but Ude less, Resolution 2048*1445
Edited to remove hotlinked image and use uploaded image instead