I have the TL-WPA4220 kit (with AV600 powerline adaptor).
I have checked the data rate using the Tp utility at this is coming up as 100mbs transfer between the two devices. But the speed over the wifi connection (2.5 GHz) AND through the LAN maxes out at less than 12MBpss. The upload speeds are around 20 MBps.
So it seems the connect between the TL-PA4010KIT (AV600) and the TL-WPA4220 is working well (my broadband at 100MBps is what I pay for) but the speeds coming out of TL-WPA4220 unit drops massively to 12MBs :(
(P.s. I have turned off powersaving mode).
Do I need to change some settings for my TL-WPA4220?