I created my banner and I'm now trying to apply a gradient. The banner is smooth after creating it with the path tool, but after applying a gradient, the edges are now jagged, like this. There are lots of settings and I'm playing with them but not able to get what I need.
[![Jagged edges](https://i.stack.imgur.com/QrDk9.png)](https://i.stack.imgur.com/QrDk9.png)