Can you please provide a url?

I’ve just submitted Storyteller 1.2 to ThemeForest. This version uses bigger thumbs sizes, which provides sharper looks.
It should become available on ThemeForest in about 1-2 days. I’ve also just emailed you Storyteller 1.2 in case you don’t want to wait.

Once you install Storyteller 1.2, you will need to regenerate your thumbnails. To do that you can use this plugin — install it, go to ‘Tools’ > ‘Regen. Thumbnails’ > ‘Regenerate All Thumbnails’. This will resize all your existing images. The new images will be resized to new sizes automatically.

This is a far better way of fixing the blurriness issue than the one that I posted earlier.

Thank you.