Ios SwiftUI拖动手势和内容拖动时的奇怪行为( skip 卡顿)

I'm trying to build a view which can be swiped up and down. I'm not sure why the above behaviour is occurring in my code. The text is kind of jumping/stuttering. I want the view to be draggable while the text is animating without the animation being broken. Am I doing something I'm not supposed to do? Below is my code. Any tips would be highly appreciated.个

struct ContentView: View {
    @State var offset : CGFloat = 0
    @State var time: String = "0.0"
    let timer = Timer.publish(every: 0.1, on: .main, in: .common).autoconnect()

    var body: some View {
      VStack {
        Spacer()
        Text(String(time)).contentTransition(.numericText())
          .onReceive(timer) { value in
            withAnimation {
              time = value.timeIntervalSince1970.minuteSecond // I have an extension for this.
            }
          }
        Spacer()
      }
      .frame(maxWidth: .infinity)
      .background(.red)
      .offset(y: offset)
      .gesture(swipeDownGesture)
    }
}

extension ContentView {
  var swipeDownGesture: some Gesture {
    DragGesture()
      .onChanged(onDrag(value:))
      .onEnded(onSwipeDownEnded(value:))
  }

  func onDrag(value: DragGesture.Value){
      let horizontalAmount = value.translation.width
      let verticalAmount = value.translation.height
      let isHorizontalSwipe = abs(horizontalAmount) > abs(verticalAmount)
      let isSwipeDown = verticalAmount > 0
      if isHorizontalSwipe {
        let isSwipeRight = horizontalAmount > 0
        if isSwipeRight {
          // Ignore
        } else {
          // Ignore
        }
      }
      else if isSwipeDown {
        withAnimation {
          offset = value.translation.height
        }
      }
  }

  func onSwipeDownEnded(value: DragGesture.Value){
    withAnimation(.smooth(duration: 0.32, extraBounce: 0.22)) {
      offset = 0
    }
  }
}