Swift Twilio's programmable chat client slow connection

I'm using Twilio programmable chat on swift and it takes the client up to 5 seconds to connect.

Here is the code:

let start = Date()

TwilioChatClient.chatClient(withToken: token, properties: nil, delegate: self) {
                (result, chatClient) in

                print("\(Date().timeIntervalSince(start)) seconds")

            }

This prints values between 3.5 to 5 seconds.

After connecting, the other apis works pretty fast, for example sending message 0.2 sec.

Does that make sense?