It's pure luck which outlet you take. It is hit or miss as your house was built.
Distance (cable length) is quite relevant but even more important are the ramifications on the way that hardly anyone is likely to know, unless he built the house and knows the power lines.
In my case I have installed over 3 floors, a separate power cord. Numerical order: ABCD. A = power supply B = Devolo, C = cable, D = Devolo. Infected by the Verlängernugkabel (to A) where B goes on C what about 30 meters D is connected. So on the way I have no branches, NO devices take power, no interference. Result: with Devolo 200 are always about 195 !, really constant and zuerlässig. Another device that (straight line) is much closer, by the way is just about 25 (here I have nothing but themselves and laid the household wiring system makes with its ramifications the Mist). So here are all the opinions with 5 and 1 Star paradoxerwiese right - because it's hit or miss. The product is wonderful. My recommendation: just buy it and try it, you can just do not know it in advance. Keep or return.
I am also of the opinion that the performance (if there are on the way branches) decreases as more units are eingeschlatet.
