Insert full size img, shows full image but blurry

Hello,
I have set with the help of Gutenberg 2 columns (50/50) in page, in the left column i set title and a content, on the right column i upload a image, with original dimensions 600×600, on “Styles>Default Style” section i set “Not Set”, on Image size i set “Full Size” and on Image dimensions “100%” but when i view the page the image is 600×600 but blurry.

In back end on page show the right dimension/quality of image but on live page no, why?
I create a new page demo nothing, i change theme, nothing again..

i check the color of space is rgb, also i upload a different image and the same happen in the second image.

I can give in public the link for privacy and seo reasons, but i can sent private if necessary

• This topic was modified 9 hours, 19 minutes ago by Be Dark.
• This topic was modified 9 hours, 17 minutes ago by Be Dark.
• This topic was modified 9 hours, 10 minutes ago by Be Dark.