How can I smooth out the curves of a drawn Path using SwiftUI with a fat Stroke?

Question

I am making a basic drawing app and using the following tutorial to allow the user to draw:

https://martinmitrevski.com/2019/07/20/developing-drawing-app-with-swiftui/

The drawings are made using a DragGesture and then seaming together all the points observed in the onChange

GeometryReader { geometry in
    Path { path in
        for drawing in self.drawings {
            self.add(drawing: drawing, toPath: &path)
        }
        self.add(drawing: self.currentDrawing, toPath: &path)
    }
    .stroke(Color.black, lineWidth: 15.0)
    .background(Color(white: 0.95))
    .gesture(
        DragGesture(minimumDistance: 0.1)
            .onChanged({ (value) in
                let currentPoint = value.location
                if currentPoint.y >= 0
                    && currentPoint.y < geometry.size.height {
                    self.currentDrawing.points.append(currentPoint)
                }
                
            })
            .onEnded({ (value) in
                self.drawings.append(self.currentDrawing)
                self.currentDrawing = Drawing()
            })
    )
}
.frame(maxHeight: .infinity)



private func add(drawing: Drawing, toPath path: inout Path) {
        let points = drawing.points
        if points.count > 1 {
            for i in 0..<points.count-1 {
                let current = points[i]
                let next = points[i+1]
                path.move(to: current)
                path.addLine(to: next)
            }
        }
    }

The issue I'm having is that for fatter strokes the curves are badly broken up as shown below.

Is there anyway to smoothen out these curves using this approach?