long awaited 1.7.1 didn't help my collision/noise/meltdown problems with a wireless X20s
I have a mixed network: a set of three X55 v1.6 (1 of which is the router) and a set of three X20 v4 -- all six operating together as one LAN.
All of the X55 and 1 of the X20 are on ethernet backhaul. One of the X20 is wirelessly repeating the wifi mesh with whatever signal it can get in an adjacent building, and the other wireless X20 is in the main building, simplu extending reach into a poorly covered corner where I don't happen to have an ethernet jack.
The longstanding problem is that since update the X20s to 1.5.5, the LAN frequently experiences a lossy noisy meltdown -- lots of packet loss both for intra-lan communications and out to the internet. Everything becomes slow and any realtime services start getting errors or going offline.
When this meltdown / packet storm happens, my solution used to be to restart the whole LAN, but that would only improve things for a short time, until the next meltdown. Eventually I figured out that the problem has always been JUST the one X20 in the building that's not on backhaul which needs to be restarted. Every time.
Yes, it's repeatable and certain now: The noisy lossy LAN and internet is 100% being caused by chatter between a wireless X20 and the rest; never a unit on ethernet backhaul or an X55.
The crashes got so bad and frequent that I started leaving that one non-backhauled unit powered off, and haven't had any network meltdowns for a month or two.
I've waited a long time for new firmware to come out, and was excited when 1.7.1 dropped the other day. I updated (all three) and withing less than a day, I had another meltdown. Same solution: unplugged the wireless X20, and everything went quiet. So that unit is staying unplugged again.
Hoping TP-Link can get this problem solved properly and soon.

