I am using the card dance effect on an image the comp starts with many parts of my image off screen then they fly in to form one image. However I have noticed when they fly on they look really blurry even at full resolution. Im not sure why. I cant see any setting in the card dance effect that would do this. Please see image attached
Card Dance explodes the layer into tiles so even large 30000 pixel images will eventually end up as tiles only consisting of a few 100 pixels. And the 3D part with filtering will further degrade stuff. This really is to be expected - it's like scaling up a layer or zooming into a very small 3D layer with the 3D camera. If you want a "hero" tile to retain its resolution, use the origianl full size image and make it a conventional 3D layer.
If you don't have Card Dance applied and you look at that part of your image at that scale, what does it look like?