I use a Netgear ACxxxx… around $300 and a cheap Net gear wall wart extender… into which I plug my Aurender W20SE. From this I get performance at the same level as my $45K turntable and Phonostage.
My belief is that ultimately your streamer is most responsible for the output you get. If you get a budget streamer, then fiddling with the router and connections can help.
I am aware of several +$150K systems operating on $59 extenders that provide world class sound. So, my recommendation is to put effort and money into the streamer and leave fiddling to folks that enjoy fiddling with networks. I spent 40 years in IT… I’m tired of trying to make networks work correctly. Let the streamer cashe and isolate.