Using 2.0.21 version, all other plugins deactivated.
I still do notice that it takes a long time (>40s ) each time to load a page with a gallery. Then the photo's are loaded quickly. In 1.9.13 a page with 50 pictures in it does load rather quickly, but now it takes +/-40s to reach the page and then the photo's load quickly, another angle to look into.
Every time a page with a gallery get's loaded it takes a long time. Per page there are 50 images. In the database I notice for all the images this query repeated:
SELECT image_slug FROM wp_ngg_pictures WHERE image_slug = 'xxxxxxx' AND NOT pid = 0 LIMIT 1`
This looks like the culprit of the slowdown mechanism. I'm not a mysql specialist, so someone any ideas of improving this in the nextgen code?