SwiftUI Menu always been refreshed and will interrupt user interaction

The demo code below presenting a view with a number incrementing per second.

The problem is:

Each time data updated in VM, the menu ( top line of MacOS) will also been refreshed, which will interrupt user's operation.

Here is the code:

*App.swift

struct MemoryTestApp: App {
  @ObservedObject var appVM = VM()
  var body: some Scene {
    WindowGroup {
      ContentView(vm: appVM)
        .environmentObject(appVM)
    }
    .commands {
      CommandMenu("Menu1") {
        Button("Test Btn") {
          print("Test Btn pressed!")
        }
      }
    }
  }
}

VM

class VM: ObservableObject {
  @Published var count = 0
   
  func startCount() async{
    while 1 == 1 {
      DispatchQueue.main.async {
        self.count += 1
        if self.count > 1000 {
          self.count = 0
        }
      }
      do{
        try await Task.sleep(nanoseconds: 1_000_000_000)
      }catch{}
    }
  }
}

View

struct ContentView: View {
  @ObservedObject var vm: VM
  var body: some View {
    Text("Hello, world! \(vm.count)")
      .frame(width: 100, height: 100)
      .onAppear(perform: {
        Task{await vm.startCount()}
      })
  }
}

MacOS Monterey Xcode: 13.2.1