The problematic ethernet connection comes at the end of a powerline extender. Does that make a difference?

Watching Netflix via the wi-fi (only) connection was faultless last night.

I've found a way to test connection speed via the Netflix app, but it give wildly varying results.

A Roku streaming stick gives much better results from the same wi-fi source. Go figure...


iMac (19,1, 3.1 GHz i5, 12.7.4, 40 Gb RAM); MacBook Air (1.8 Ghz, 8 Gb RAM, 10.14.6, 256 Gb SSD) Vodafone router and Devolo Wi-Fi Extender, Canon TS8351 printer/scanner.