Gallery show only 40 photos

Everything works perfectly, but my gallery displays only 40 images. The catalog contains over 50 Is this any restriction?

Please give me your site link.

paprocki.xaa.pl/fve/index.php?option=com...icle&id=49&Itemid=74 - link to gallery

Please give me a couple of names of the images that are in the folder, and not shown on the module.

In the folder I have images from a001.jpg to a053.jpg
Missing images is: a053.jpg, a051.jpg, a049.jpg, a048.jpg, a045.jpg ...
I checked and I do not see 13 of 53 photos, missing pictures are not in sequence.

In example, image paprocki.xaa.pl/fve/images/stories/fruit/a053.jpg is missing even if you are calling it directly.

Please check if image is in proper format, uploaded to the correct location, and if permissions are set correctly.

One more thing, if you include too much images in the module, the loading time of the page will increase.