Ethernet wiring to fire stick

[Drawweight]

I’ve got a fire stick that buffers occasionally. Usually on live sport.

Couple of questions.

I’m only getting 45mbps download. Would having too many wireless devices connected at once (7 sometimes the usual iPads, phones etc ) be spreading the load too thin?

Has anybody had success with using an adapter and running an Ethernet cable directly from the router? I’ve seen them advertised/mentioned but personal experience would be good if you’ve tried it.