I see Messenger works with delay and intermittence. I mean, I start a conversation and after some minutes the connection display (bar with dots in the bottom) shows a message saying that it's "Connecting". The dots move from left to right and after some minutes it works (sometimes it doesn't work I need to refresh). While this occurs, the text box to send messages is inactive, I can't write inside it.
I don't know if that behavior is "normal" because for me this latency is very frequent.
Please, comment with your experience and let know if you use this messenger tool in other ways, I mean other browsers or mobile to have a good performance.
Your comments are very appreciated!