My TP-PLC software as well as my device's web interface always show that the powerlan link speed is well above 500mbit/s (most of the time even reaching 590mbit/s) - which would be perfectly fine for

I get slow internet throughput on a new PA9020P bought this month. The line rates are high - which I can see from the TPLink utility for PA9020P; same room 1300-1400, next door room 1000mbps, furthest