Good 802.11ac Stick, now with all the channels in the 5GHz band

Good stick that in me, the appropriate performance shows about 650 Mbit / s connection rate, the rate lies at net about 40Mbyte / s (no wall zwichen router and stick). I use only the 5GHz band. And USB is recognized as version 3.0. To get the maximum performance, I had a little taste of the alignment of the sticks until the best result was achieved.
I could solve the problem with the available channels in the 5 GHz band, so I can use all available channels in the 5 GHz band in Germany (not just the channels 36-48). Was purely a driver thing. It should be noted here that is that you can send to the "higher" bands with more power (50mW / MHz instead only 10mW / MHz). Whether the stick but the really can hardware side, I konne not figure out, but the part of the router can spark a little further.
In Stick the Realtek RTL8812AU chipset is installed. Realtek is a separate driver is available, which is from December 2014 and all channels allowed. Just google for Realtek_WiFi_RTL81xxCU_8188RU_1026.9.0312.2014 and then it should go. However, I give only three stars because I think it's absolutely weak TP-Link, that was not available this driver available for download and only the age-old is to have from April. I compare it with the condition that you buy a TV that can not display all channels.