"[this] gave rise to a Wi-Fi "microwave oven interference robustness" mode that segments larger data frames into fragments each small enough to fit into the oven's "off" periods."

https://en.wikipedia.org/wiki/Electromagnetic_interference_a...

Well anything that operates on 5GHz will avoid 2.4Ghz interference. So even 5GHz 802.11n will work.

OP here - Yes, I am aware that ac should take care of the interference issue. Of course if you run 5Ghz n that should as well, but distance is a real PITA for 5GHz. I've read that the 5GHz on ac uses beam forming to increase distance/throughput. But that would be just as much an experiment at this point as the Powerline adapters were. And ac routers and adapters are rather expensive right now, particularly compared to the Powerline equivalents.

I upgraded to 11ac from an early generation powerline adaptor because it wasn't reliable. It is much more reliable over the short distance, but as my house is brick/block construction I find the range at 5GHz drops off quickly. So when I am in the lounge I get 135Mbit/sec at 5GHz but outside barely a sniff of 5GHz, however the 2.4GHz still works.

My old powerline adaptors are now in service feeding my workshop with network, but I only get 40Mbps on my gigabit network. Currently contemplating fibre just because of the small size and low loss.