I am trying to get waterlines visualized with arrow lines, but when zoomed out I can't get them to be spacious enough.

[![MarkerLine Spacing - not even and too close](https://i.stack.imgur.com/Vnx5q.jpg)](https://i.stack.imgur.com/Vnx5q.jpg)

So as you can see on the markerline settings, i set 100 pixels as an interval, but there are awkward clusters and even if i set it to 1000, they will not get more spacious (red dots).

I have the layer in edit mode so you can also see the vertex density (the red Xs).

Any ideas how to make the interval regular and more spacious?