I had the software to the latest version FritzOS updated (supposedly should fix a lot of problems) tried and settings based on guidance from chip.de and Co. - to no avail.
The Fritzbox 7360 had with me very weak transmission speeds and the wireless was extremely unstable Wi-Fi connection is often broken and has nearly lost itself over very short distances of a few meters without obstruction and without interference sources the complete transmission power.
The Fritz box 7490 is there quite different, and finally works as expected. I do not know if I have a "Monday device" caught or anything was broken, but in practice was the 7360 unbrachbar for me unusable.
Therefore, there is only one star.