I tried it and it dramatically decreases speed. I got a very unstable 9mbps top speed. I couldn't force adapter 1 to connect to adapter 2. It kept connecting adapter 1 to adapter 3.

I have installed two TL-PA7017P. One is installed next to my router on the ground floor. The other is installed in my bedroom on the 2nd floor. After doing a couple latency tests I see that the...