One house. One separate garage. BT HomeHub 3 with Infinity Option 2 (70Mb minimum usually). Ethernet 20M CAT5E cable hanging outside exposed connecting the 2 building, through a window into a TP Link TL-PA411 (AV500) in the garage. 2 more (3 total) TL-PA411's (AV500) in the garage. 1 of the TL-PA411's is connected to my Asus RT-N66U (acting as a access point to extend wireless coverage) which is hardwired to my Xbox One, 360, AVR. The other is connected 1 x TL-PA211 (AV200) in there also. I was getting a consistent 70Mb down. Now I'm getting closer to 30Mb. Nothing on my network has changed other than me upgrading the firmware on the devices. Screenshot below showing the devices as AV200 when some should be AV500. The device at the top is the homeplug I am connected to. What am I doing wrong?