The problem remains.
This is only in remote desktop towards the ultrabook. Last night, during a deployment, it was simply not workable as it was cutting the connection almost every minute. At once, I was not able to connect for a few minutes. So, I started to use it directly.
The ultrabook does not have any problem as is. It's connection is at wireless 112 Mbps. So, I do not think the wireless speed is a factor. The PC is connected at 1 GB.