Speed of changing to next photo

I used to use Nextgen Gallery, but I’ve been having a lot of issues with it eating memory from my site, so I decided to move everything over to Flickr.. Love this plug-in. My only issue with it is the speed of the picture changing to the next photo.

When my readers click next to view the next photo, it takes about 10 seconds to change over to the next photo.

Any ideas on how to fix this issue?