Extra un-needed Path compute using Shape protocol in SwiftUI

Question

I am experiencing some extra un-needed path compute from Shape which even happens touching the screen of view, I tried to make it equatable and stoping those un-needed compute but did not helped. How can I make Shape stop this extra loads to CPU and compute when the radius change in value?

struct ContentView: View {
    var body: some View {
        print("Render!")
        return ArcShape(radius: 100.0)
            .fill(Color.orange)
            .background(Color.blue)
    }
}


struct ArcShape: Shape, Equatable {
    
    let radius: CGFloat
    func path(in rect: CGRect) -> Path {
        return Path { path in
            print("Compute!")
            path.addArc(center: CGPoint(x: rect.midX, y: rect.midY), radius: radius, startAngle: Angle(degrees: 0), endAngle: Angle(degrees: 360), clockwise: true)
        }
    }
    
    static func ==(lhs: ArcShape, rhs: ArcShape) -> Bool {
        return lhs.radius == rhs.radius
    }

}