Goonertron: I think it is more to do with Telecom sending you a s****y $40 router. We signed up for UFB, the person on the phone said they would give us a business grade router and today a tp link router turned up that was significantly worse than our 5 year old thomson router. The wifi range was so bad I couldn't even load up speedtest plugged in the old router in the same spot and got 5mbps wifi. It's terrible that telecom seem to put out worse routers each year. UFB with a $40 router and no antenna is just criminal.
That's strange because Telecom aren't using TP-Link gear.
To be honest though the WiFi performance in most TP-Link gear is pretty good, even in RF dense environments with a low noise floor.