@Tom-Elliott If i change of computer to connect to the server, it’s the same. It’s not a cache or browser problem. Display updating informations but they are stuck at a certain point. Client side seems to send always the same information but continue to upload or download.
Others tests these days says that it do it in uploading/downloading, unicast and multicast. All tasks can freeze but continue on client. Web display is refreshing but as i said with the same informations. If i change browser or use another computer to connect tasks, same information is displaying with no progress. I think it came from client side but not sure. How are progress informations sent to tasks display ?