Question

An AI wrote this SwiftUI image thumbnail that downsamples a large photo before display. It works, but scrolling a grid of these stutters badly and the watchdog occasionally kills the app on launch when many cells appear at once. What's wrong and how would you fix it?

1struct Thumb: View {2    let url: URL3    var body: some View {4        let data = try! Data(contentsOf: url)          // sync download/disk read5        let img = downsample(data, to: CGSize(width: 100, height: 100))6        return Image(uiImage: img).resizable()7    }8}