Hello  Junia25,None of your mentioned reasons helped for me, tried everything, so just gave up Instead of slideshow I chose RICH TEXT WITH IMAGE. This is not good as slideshow, but works well on mobile version 

Hello, I uploaded two different sizes photos to slideshow section. In desktop version it looks perfect, but in mobile version it became blurry. Tried to change from jpg to png. Tried sizes 1000x1600 px, 750x1100 px. All of them looked the same and bl...