I've got an Xperia Z2, and a load of photos stored on an SD card. When I try to browse the photos using the built in photos app and scroll back a few months, I just get a screen full of grey icons as if it is searching for the pictures but not finding them. If it was looking for them on my Google account and the connection was slow I could understand that, but if they're on the SD card locally I would have thought it could find them pretty much instantly.
Sometimes it will find them after a few minutes, but sometimes after half an hour it still hasn't found the pictures. Is it a dodgy SD card, or is this normal?