[X2Go-User] Asyncron bandwith issue

Hi One of my users have a 20/3 Mb/s connection, and experience problems when he connects to our server. The problem is that the icons do not refresh, and that the desktop stalles if he does certain actions, like right-clicking a mailbox folder in Thunderbird to display a list of options.

The problem does not occur, if the same user log in from a 20/20 connection, or even a 3G dongle with approx 3 Mb bandwith. Continous ping test with packet size of 25000, for 3 hours shows no packet dropped to the server for his 20/3 connection.

What would you recommend as proper network settings, or how we troubleshoot the issue ?

regards Kjetil Fleten