@BrianRJ 

Hi,

I assume you are referring to the "G.hn" Powerline standard.

Powerline performance is really unpredictable. A "G.hn" Powerline adapter might or might not work better in your environment.

TP-Link advertises both, their Homeplug AV and their G.hn Powerline adapters as "up to 300 meters". However, this number is rather hypothetical.

I happen to own a set of TP-Link TL-PA7017P adapters that are rated as "up to 1000 Mbps" and a set of G.hn adapters made by Comtrend rated as "1 Gbps", which is the same as 1000 Mbps.
When plugged into the same two wall outlets inside my home I measured the following data throughput numbers.

TP-Link TL-PA7017P:    150 Mbps DL / 182 Mbps UL
Comtrend G.hn:             133 Mbps DL / 123 Mbps UL

A higher throughout at a given distance should theoretically mean a more stable connection and better possible range.

So, in my particular environment the G.hn standard does not perform better than the "older" Homeplug AV2 standard. 

  @woozle 

Thanks very much for your reply. Exactly the kind of feedback I was looking for. Much appreciated.