My camera connection kit is slow on my iPad 4 iOS 7.1

I have my camera connection kit connect to my iPad 4th Gen running iOS 7.1 and the images are taking ages to load!

It's been 15 minutes now and the preview thumbnails are not even loaded, it's still loading all the pics from my DSLR.

I read a few forum discussions online that people had this issue on iOS 7 but for most the problem was resolved after the 7.1 update but for me it's still the same.

I am actually using a third party camera connection kit so I don't know if it's related to the adapter or iOS but looking at the previous issues I think it may be iOS.