Works only when he wants

I bought the stick for some time, because my PC is far away from the router in our flat and I was hoping for a strong stick with antenna.
However, first he gets every time the PC is no longer connected to the network. Only after several pure and pulling out the stick is again the connection. The holding times during the day, sometimes I have to reset it after only two hours.
Partial remains the connection, but the speed bobs around on about 50kBit / s, which makes a liquid surfing impossible.

Since the drive has received several good reviews, I thought it is probably because of my router and have replaced the stick with my parents. Unfortunately occurs here exactly the same problem. Also an update of the drivers does not help.

From me, therefore no recommendation to buy!