My hires image looks super sharp and nice during the fade from the previous one. And then, when it's fully loaded it kind of snaps to a blurry version. Have a look at the top slider at http://www.helikopterfoto.se (the slider whith the drone and the town roofs). If you switch between the two images manually it's very obvious. Anyone knows something about this? I read something about 0,5 px offset in the CSS, but I'm not sure that's the problem.
The error occurs on all sliders available in the options panel (Flex slider, Responsive and so on).