@borntonag – Thanks for using nRelate on your site!
Right now, it’s not possible to have nRelate display only posts from the same category as the article a reader is currently viewing. We always love getting feedback from our users, and we might be able to offer this option in future builds of the plugin.
Also, we allow all other elements of a page to load before our plugin loads, as to combat slow page loading times which is probably why you are seeing a slight delay for when the plugin shows up. However, this slight delay should never take too long but if you are seeing issues please let us know.
We also have our own support forum if you have any other questions or ever need any help: nrelate.com/forum.