Hello I tried to boost the speed of the site by enabling photon feature, but I noticed that all images from the Homepage low their resolution and some of them change a little their size. I also mention it on the Theme's support (http://themeforest.net) forum but they said that is not a theme problem. My site is http://elthraki.gr/ but I disable it on it cause it is a production site. I made one testing site in order to see this problem. http://www.papadopoulosgiannis.gr/jarida/
Any advice would be useful.