After Update strong improvement ...

Update:
After I installed a new version of the software of the AVM home page, the stick is now running properly. I reach a speed of about 10 - 15 MB / sec. when copying large files from the NAS (1 wall and about 3 meters to FritzBox, 5GHz with 50% Wireless performance in the Fritz box, according to AVM Software ca 230 Mbit / s). That's more than twice as much as with the old stick.

I think AVM should alert the user to a new version of the software. Why only 4 stars.

Original Review:
I can only advise against the purchase.
My old 150MBit / s stick has had full reception and yet not a single disconnection.
After I have the AVM AC infected 430, there are crashes every second. Every now and then the connection keeps time for a few minutes, but then only in the 2.4 GHz network. I can also keep the old stick.

Too bad for the Powerline disaster with me, already the second AVM product which seems absolutely immature in a short time ........

Buy recommendation, quite clear: NO !!!