Hi @mplusb,
thank you for your quick response.
I didnt’t manage to solve the issue but I made the mistake to check the site while being logged in as admin. The images don’t shuffle and change their sizes (now that i test that in another browser) but I still have the problem that the tile size seems to be random.
There still are small images that are blown up while bigger images are shrunken. This can be seen by some images appearing blurry since they are being enlarged.
