Well I had a broadband outage yesterday, not a great day. However, through all the resets of the router and fixing the problem with the fibre in the area also seems to have resolved my low throughput...

I know that I won't see anywhere near the throughput that the TP-Link utility shows; but it's showing a rate of 300-400Mbps between a pair of brand new adapters yet using speedtest.net and fast.com...