In conjunction with a Fritz box 7390 and 10m in a straight line without interference (neighboring networks) in the 2.4 GHz and 5 GHz band the stick takes a long time before it connects. (Page structure slowly). Once the connection is there, the full bandwidth is achieved (VDSL 25000). If he does about every 10MB Downloads for 2 seconds pause, then go on. According to AVM, it is a discontinued model that is no longer officially supported. The beta software of the AVM side (instructions followed exactly) does not help. Since 7 laptops are no problems with 2 Windows, our network is not the cause.
Who uses Windows 8.1 or wants to change it should from this stick stay away or buy a current model.