[Taterr]

You can do bevel with 2 if you accept intersections, which will always occur unless you ensure a minimum distance between points equal to the width of the line. https://i.imgur.com/1vWoAGV.png

In my context the line represents a player path so the transparency overlap created by the bevel intersection is actually perfectly fine and looks good. The same for intersections over a previous section of the path.

I might go back and add the pixel buffer method anyway so the rounded curves can be both smooth and non intersecting.

https://i.imgur.com/DXRkZGt.png