Pictures half visible on webpages

Since a couple of days I am experiencing a problem on certain websites. Pictures are loaded completely and then only half is shown. I disabled one plugin at a time to determine if a plugin was causing this behaviour. I have isolated this behaviour to Memex. I am not technical enough to determine the simalarities, but I am experiencing this on for instance with a Dutch newspaper nrc.nl and on productpages of Decathlon.nl
Hope you can help me out!