Very good reception Weak transmission power

I could start with the stick directly in Win 8.
There were countless WLAN networks are displayed, the reception performance is very good.
But when I try to connect through three walls and 20m garden -> nil my wireless network is displayed with three bars and at the supposedly standing connection with 5 bars.
But when I try to access the Internet to any page builds on and after two minutes the drive is disconnected at once.

For an external antenna that's bad!

My notebook and a 6 year old embroidery create this connection with a bar because the network stüzt never!
Even right next to the router crashes the connection every 20 minutes which is not on the PC, also with driver, it does not work out.

I do not recommend you disen WLAN stick, looking for other models.