Recently I've noticed when I go thought my pictures in my camera roll, or a folder that my I4 will freeze. I have to restart it to continue, any one else have this issue? I just went on a trip and have over 300 pictures and videos.
Ive noticed the issue as well though I only have 40 saved photos. I figured it may be HDR photos rendering which may be causing the issue, but not sure. You may want to export them to your photo library and see if that clears up the issue after it's transferred back into an album.
You can also try crashing all your apps active and see if that frees up album cycling. Many apps require loads of RAM which can cause freezing issues.