If there were any updates, you'd probably see euphemisms like "improved client connectivity" or somesuch in the release notes. Alas, there are no updates, and hence, no confessions.

The "new" firmware from March 2016 is still ancient, built on Qualcomm base firmware 2.0. TP-Link had a beta version on 2.2 available last year, but that never made it into a proper release. All the...

The xxx5 are in essence the "french connection" (heh) versions of the european xxx0 series. While the hardware may be otherwise identical, there may be local regulatory differences, prompting...

Ask yourself: What did I change recently? Look for things like a new appliance, even if it's just a CCFL or LED replacement light bulb, a new light fixture, any other new equipment. Then, think about...

Yes they do. PLC adapters are supposed to remember their encryption key across a power outage, no matter how long. They have non-volatile storage inside for this.

Just like with any other shared-media networks (like e.g. WiFi), expect your actual payload throughput to be around one third of the media bandwidth. So Chris, your stats look somewhat normal, but...