Like a title, I updated taget version but my App on Store still compatibility is "Ios 11 or later". How to update compatibility? Thank!

I have a List and about 1000 item of Array, and my item update realtime (100 messenger updated/s). My List is very very lag. I see ForEach run full (1000 turn)/ (1 item update) => crazy Can you help me a solution like a reloadRows in UIKit with UITableView. Thank so much! This my test code (I try with List and LazyVStack): struct PriceBoardView2 : View {   @EnvironmentObject var loadingEnv : LoadingEnv   @State var listUser : [UserModel]       var body: some View {     VStack(content: {       Button(action: {         updateData() //fake data realtime update       }, label: {         Text("Fake data realtime update")       })       List(content: {         ForEach(listUser.indices, id: \.self) { i in           RowPriceBoardView2(userModel: listUser[i])         }       }) //      ScrollView(content: { //        LazyVStack(content: { //          ForEach(listUser.indices, id: \.self) { i in //            RowPriceBoardView2(userModel: listUser[i]) //          } //        }) //      })     })     .onAppear(perform: {       for i in 0..<1000 {         listUser.append(UserModel(number: i, name: "-", age: 0))       }     })   }       func updateData() {     DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.01, execute: {       let i = Int.random(in: 0..<1000)       self.listUser[i] = UserModel(number: i, name: "Pla pla", age: Int.random(in: 0..<1000))       updateData()     })   } } struct UserModel {   var number : Int    var name : String    var age : Int } struct RowPriceBoardView2: View {   var userModel : UserModel       var body: some View {     HStack(content: {       Text("\(userModel.number)")       Spacer()       Text("\(userModel.name)")       Spacer()       Text("\(userModel.age)")     })     .frame(width: .infinity, height: 30, alignment: .center)   } }

This is my code with swiftui, when I click button = change tradingMode inside sheet = after show keyboard from ContentView = app crash. Please help me and thanks! enum TradingMode {   case Derivatives, Equities } struct ContentView: View {   @State var tradingMode : TradingMode = TradingMode.Equities   @State var isShowSecondView = false       var body: some View {     VStack(content: {       Button("show second view") {         isShowSecondView.toggle()       }       TabView {         switch tradingMode {         case .Equities:           VStack(content: {             Text("Tab 1 Un")               .padding()             TextField("ple", text: .constant(""))           })           .tabItem {             Text("tab 1")           }.tag(0)                     case .Derivatives:           VStack(content: {             Text("Tab 1 Der")               .padding()             TextField("ple", text: .constant(""))           })           .tabItem {             Text("tab 1")           }.tag(0)         }                   switch tradingMode {         case .Equities:           VStack(content: {             Text("Tab 2 Un")               .padding()             TextField("ple", text: .constant(""))           })           .tabItem {             Text("tab 2")           }.tag(1)         case .Derivatives:           VStack(content: {             Text("Tab 2 Der")               .padding()             TextField("ple", text: .constant(""))           })           .tabItem {             Text("tab 2")           }.tag(1)         }       }             })     .sheet(isPresented: $isShowSecondView, content: {       SecondView(tradingMode: $tradingMode)     })        } } struct ContentView_Previews: PreviewProvider {   static var previews: some View {     ContentView()       .previewLayout(.device)                   } } struct SecondView: View {   @Environment(\.presentationMode) var presentation   @Binding var tradingMode : TradingMode       var body: some View {     VStack(content: {       Button("Change state") {         if tradingMode == .Derivatives {           tradingMode = .Equities         } else {           tradingMode = .Derivatives         }         self.presentation.wrappedValue.dismiss()       }     })        } } and video bug drive.google.com/file/d/18eXCmlByGqJylEhCZbtJ4Rn0wmI0bb/view