I am still at the first stage of building the word scramble app. When I run the code in the preview or simulator, it lasts forever slowing down my laptop and when it suceeds it is impossible to interact with the app on the simulator. is this normal? How can I fix this? this is my code:

struct ContentView: View {
    @State private var usedWords = [String]()
    @State private var rootWord = ""
    @State private var newWord = ""
    var body: some View {
        NavigationView {
            VStack{
                TextField("Enter your word", text: $newWord, onCommit: addNewWord)
                    .textFieldStyle(RoundedBorderTextFieldStyle())
                    .autocapitalization(.none)
                    .padding()
                List(usedWords, id: \.self) {
                    Image(systemName: "\($0.count).circle")
                    Text($0)
                }
            }
        navigationBarTitle(rootWord)
        }
    }
    func addNewWord() {
        // lowercase and trim the word, to make sure we don't add duplicate words with case differences

        let answer = newWord.lowercased().trimmingCharacters(in: .whitespacesAndNewlines)

        // exit if the remaining string is empty

        guard answer.count > 0 else {
            return
        }

        // extra validation to come

        usedWords.insert(answer, at: 0)
        newWord = ""
    }
}